Search for Copper, Cu
- Seaweed, spirulina, dried
- Seeds, sesame seeds, whole, dried
- Winged beans, mature seeds, raw
- Soy flour, low-fat, crude protein basis (N x 6.25)
- Soy flour, defatted
- Peanut butter, smooth, vitamin and mineral fortified
- Seeds, breadnut tree seeds, dried
- Soybeans, mature seeds, raw
- Nuts, cashew nuts, dry roasted, without salt added
- Nuts, cashew nuts, dry roasted, with salt added
- Hyacinth beans, mature seeds, raw
- Vermicelli, made from soy
- Nuts, cashew nuts, oil roasted, without salt added
- Nuts, cashew nuts, oil roasted, with salt added
- Nuts, mixed nuts, without peanuts, oil roasted, with salt added
- Nuts, mixed nuts, oil roasted, without peanuts, without salt added
- Lentils, pink, raw
- Soy flour, full-fat, raw, crude protein basis (N x 6.25)
- Seeds, sunflower seed kernels, toasted, with salt added
- Seeds, sunflower seed kernels, toasted, without salt
- Soy flour, full-fat, raw
- Soy meal, defatted, raw
- Soy meal, defatted, raw, crude protein basis (N x 6.25)
- Seeds, sunflower seed kernels, oil roasted, without salt
- Seeds, sunflower seed kernels, oil roasted, with salt added
- Nuts, mixed nuts, with peanuts, oil roasted, with salt added
- Nuts, mixed nuts, oil roasted, with peanuts, without salt added
- Seeds, sunflower seed kernels, dry roasted, with salt added
- Seeds, sunflower seed kernels, dry roasted, without salt
- Nuts, brazilnuts, dried, unblanched
- Nuts, almond butter, plain, without salt added
- Nuts, almond butter, plain, with salt added
- Pigeon peas (red gram), mature seeds, raw
- Beans, adzuki, mature seeds, raw
- Seeds, sesame seed kernels, dried (decorticated)
- Seeds, flaxseed
- Nuts, chestnuts, japanese, dried
- Mungo beans, mature seeds, raw
- Beans, kidney, california red, mature seeds, raw
- Beans, white, mature seeds, raw
- Nuts, hazelnuts or filberts
- Mung beans, mature seeds, raw
- Radishes, oriental, dried
- Soy flour, full-fat, roasted
- Soy flour, full-fat, roasted, crude protein basis (N x 6.25)
- Buckwheat
- Seeds, sesame seed kernels, toasted, without salt added (decorticated)
- Seeds, sesame seed kernels, toasted, with salt added (decorticated)
- Soybeans, mature seeds, dry roasted
- Nuts, walnuts, english
- Beans, kidney, royal red, mature seeds, raw
- Beans, black turtle soup, mature seeds, raw
- Lupins, mature seeds, raw
- Peanuts, virginia, oil-roasted, with salt
- Peanuts, virginia, oil-roasted, without salt
- Seeds, cottonseed kernels, roasted (glandless)
- Nuts, pine nuts, dried
- GREEN GIANT, HARVEST BURGER, Original Flavor, All Vegetable Protein Patties, frozen
- Cowpeas, catjang, mature seeds, raw
- Beans, kidney, all types, mature seeds, raw
- Nuts, mixed nuts, dry roasted, with peanuts, with salt added
- Nuts, mixed nuts, dry roasted, with peanuts, without salt added
- Beans, navy, mature seeds, raw
- Seeds, pumpkin and squash seed kernels, dried
- Peanuts, all types, oil-roasted, without salt
- Beans, pinto, mature seeds, raw
- Peanuts, valencia, raw
- Peas, split, mature seeds, raw
- Beans, pink, mature seeds, raw
- Nuts, walnuts, black, dried
- Nuts, almonds, blanched
- Chickpeas (garbanzo beans, bengal gram), mature seeds, raw
- Peanuts, all types, raw
- Beans, black, mature seeds, raw
- Nuts, pistachio nuts, dry roasted, without salt added
- Nuts, pistachio nuts, dry roasted, with salt added
- Peanuts, virginia, raw
- Nuts, almonds, dry roasted, with salt added
- Nuts, almonds, dry roasted, without salt added
- Vegetarian stew
- Soy flour, defatted, crude protein basis (N x 6.25)
- Nuts, pistachio nuts, raw
- Teff, uncooked
- Beans, cranberry (roman), mature seeds, raw
- Beans, great northern, mature seeds, raw
- Seeds, pumpkin and squash seed kernels, roasted, without salt
- Seeds, pumpkin and squash seed kernels, roasted, with salt added
- Millet, raw
- Nuts, almonds, oil roasted, with salt added
- Nuts, almonds, oil roasted, without salt added
- Peanut butter, chunk style, with salt
- Peanut butter, chunk style, without salt
- Yardlong beans, mature seeds, raw
- Soybeans, mature seeds, roasted, no salt added
- Soybeans, mature seeds, roasted, salted
- Cowpeas, common (blackeyes, crowder, southern), mature seeds, raw
- Soy flour, low-fat
- Nuts, almonds, honey roasted, unblanched
- Beans, small white, mature seeds, raw
- Mothbeans, mature seeds, raw
- Lima beans, thin seeded (baby), mature seeds, raw
- Winged beans, mature seeds, cooked, boiled, with salt
- Beans, winged, mature seeds, cooked, boiled, without salt
- Nuts, pecans, oil roasted, without salt added
- Nuts, pecans, oil roasted, with salt added
- Lima beans, large, mature seeds, raw
- Peanuts, spanish, raw
- Nuts, pecans
- Mushrooms, shiitake, cooked, without salt
- Mushrooms, shiitake, cooked, with salt
- Hummus, commercial
- Beans, kidney, red, mature seeds, raw
- Beans, yellow, mature seeds, raw
- Broadbeans (fava beans), mature seeds, raw
- Peanut flour, low fat
- Peanut butter, smooth style, without salt
- Peanut butter, smooth style, with salt
- Pepeao, dried
- Rowal, raw
- Peanuts, valencia, oil-roasted, without salt
- Peanuts, valencia, oil-roasted, with salt
- Natto
- Chicken, meatless
- Potatoes, mashed, dehydrated, granules with milk, dry form
- Miso
- Nuts, pilinuts, dried
- Fruit, mixed, (prune and apricot and pear), dried
- Seeds, cottonseed flour, partially defatted (glandless)
- Seeds, sunflower seed flour, partially defatted
- Peanut flour, defatted
- Wheat, durum
- Nuts, almond paste
- Buckwheat groats, roasted, dry
- Meatballs, meatless
- Amaranth, uncooked
- Nuts, macadamia nuts, raw
- Quinoa, uncooked
- Lentils, raw
- Frankfurter, meatless
- Peanuts, all types, dry-roasted, without salt
- Oats
- Peanuts, spanish, oil-roasted, with salt
- Peanuts, spanish, oil-roasted, without salt
- Kamut, uncooked
- Tomato products, canned, paste, without salt added
- Nuts, almonds
- Tempeh
- Barley, hulled
- Wheat germ, crude
- Nuts, coconut cream, raw (liquid expressed from grated meat)
- Spelt, uncooked
- Nuts, hickorynuts, dried
- Triticale
- Rice bran, crude
- Soybean, curd cheese
- Soy protein isolate, PROTEIN TECHNOLOGIES INTERNATIONAL, ProPlus
- Barley, pearled, raw
- Chickpea flour (besan)
- Wild rice, raw
- Wheat, hard red winter
- Seeds, sunflower seed kernels, dried
- Beans, french, mature seeds, raw
- Prunes, dehydrated (low-moisture), uncooked
- Beans, baked, canned, with beef
- Wheat, hard red spring
- Vegetarian fillets
- Mushrooms, white, cooked, boiled, drained, without salt
- Mushrooms, white, cooked, boiled, drained, with salt
- Beans, adzuki, mature seeds, canned, sweetened
- Tomatoes, sun-dried
- Peanuts, all types, oil-roasted, with salt
- Wheat, soft red winter
- Nuts, macadamia nuts, dry roasted, with salt added
- Nuts, macadamia nuts, dry roasted, without salt added
- Seeds, watermelon seed kernels, dried
- Mammy-apple, (mamey), raw
- Triticale flour, whole-grain
- Nuts, chestnuts, european, roasted
- Tomato products, canned, puree, with salt added
- Tomato products, canned, puree, without salt added
- Rye flour, dark
- Wheat, soft white
- Avocados, raw, Florida
- Sweet potato, canned, mashed
- Seeds, sesame seeds, whole, roasted and toasted
- Soybeans, mature cooked, boiled, without salt
- Soybeans, mature seeds, cooked, boiled, with salt
- Nuts, coconut cream, canned, sweetened
- Wheat, hard white
- Apricots, dehydrated (low-moisture), sulfured, uncooked
- Beans, adzuki, mature seed, cooked, boiled, with salt
- Beans, adzuki, mature seeds, cooked, boiled, without salt
- Pineapple juice, frozen concentrate, unsweetened, undiluted
- Potatoes, microwaved, cooked, in skin, flesh and skin, with salt
- Potatoes, microwaved, cooked in skin, flesh and skin, without salt
- Seeds, sesame butter, paste
- Currants, zante, dried
- Pears, dried, sulfured, uncooked
- Hyacinth beans, mature seeds, cooked, boiled, without salt
- Hyacinth beans, mature seeds, cooked, boiled, with salt
- Chicken, meatless, breaded, fried
- Nuts, chestnuts, european, raw, unpeeled
- Nuts, coconut milk, raw (liquid expressed from grated meat and water)
- Beans, chili, barbecue, ranch style, cooked
- Nuts, cashew nuts, raw
- Rye
- Buckwheat flour, whole-groat
- Lima beans, immature seeds, frozen, baby, cooked, boiled, drained, with salt
- Lima beans, immature seeds, frozen, baby, cooked, boiled, drained, without salt
- Beans, white, mature seeds, canned
- Raisins, golden seedless
- Carob flour
- Peaches, dried, sulfured, uncooked
- Wheat bran, crude
- Chickpeas (garbanzo beans, bengal gram), mature seeds, cooked, boiled, with salt
- Chickpeas (garbanzo beans, bengal gram), mature seeds, cooked, boiled, without salt
- Peaches, dehydrated (low-moisture), sulfured, uncooked
- Prunes, dehydrated (low-moisture), stewed
- Teff, cooked
- Peanut butter, chunky, vitamin and mineral fortified
- Apricots, dehydrated (low-moisture), sulfured, stewed
- Nuts, coconut milk, frozen (liquid expressed from grated meat and water)
- Beans, baked, canned, with franks
- Hummus, home prepared
- Gooseberries, canned, light syrup pack, solids and liquids
- Beans, navy, mature seeds, canned
- Beans, baked, canned, with pork
- Nuts, butternuts, dried
- Edamame, frozen, prepared
- Lima beans, immature seeds, frozen, fordhook, cooked, boiled, drained, without salt
- Lima beans, immature seeds, frozen, fordhook, cooked, boiled, drained, with salt
- Rice, brown, medium-grain, raw
- Raisins, seedless
- Beans, baked, canned, with pork and tomato sauce
- Corn, yellow
- Corn, white
- Baked beans, canned, no salt added
- Tomatoes, sun-dried, packed in oil, drained
- Potatoes, red, flesh and skin, baked
- Lima beans, immature seeds, cooked, boiled, drained, with salt
- Lima beans, immature seeds, cooked, boiled, drained, without salt
- Beans, white, mature seeds, cooked, boiled, without salt
- Beans, white, mature seeds, cooked, boiled, with salt
- Frijoles rojos volteados (Refried beans, red, canned)
- Rice, brown, long-grain, raw
- Potatoes, microwaved, cooked in skin, skin, without salt
- Potatoes, microwaved, cooked, in skin, skin with salt
- Beans, kidney, california red, mature seeds, cooked, boiled, with salt
- Beans, kidney, california red, mature seeds, cooked, boiled, without salt
- Endive, raw
- Barley flour or meal
- Beans, fava, in pod, raw
- Nuts, coconut milk, canned (liquid expressed from grated meat and water)
- Durian, raw or frozen
- Potatoes, boiled, cooked without skin, flesh, without salt
- Potatoes, boiled, cooked without skin, flesh, with salt
- Soymilk, chocolate, with added calcium, vitamins A and D
- Soymilk, chocolate, unfortified
- Rice, white, long-grain, parboiled, enriched, dry
- Rice, white, long-grain, parboiled, unenriched, dry
- Raisins, seeded
- Beans, black turtle soup, mature seeds, cooked, boiled, with salt
- Beans, black turtle soup, mature seeds, cooked, boiled, without salt
- Nuts, hazelnuts or filberts, dry roasted, without salt added
- Lentils, mature seeds, cooked, boiled, without salt
- Lentils, mature seeds, cooked, boiled, with salt
- Seeds, safflower seed kernels, dried
- Lima beans, immature seeds, raw
- Tomato products, canned, sauce, with onions, green peppers, and celery
- Potatoes, red, flesh and skin, raw
- Seeds, safflower seed meal, partially defatted
- Plums, dried (prunes), uncooked
- Peaches, dehydrated (low-moisture), sulfured, stewed
- Tomato products, canned, sauce, with mushrooms
- Vegetable juice cocktail, canned
- Tomato and vegetable juice, low sodium
- Soymilk, chocolate and other flavors, light, with added calcium, vitamins A and D
- Soymilk, chocolate, nonfat, with added calcium, vitamins A and D
- Tomato sauce, no salt added
- Pears, dried, sulfured, stewed, with added sugar
- Tomato products, canned, paste, with salt added
- Macaroni, whole-wheat, dry
- Tofu, raw, firm, prepared with calcium sulfate
- Potatoes, baked, skin, without salt
- Potatoes, baked, skin, with salt
- Succotash, (corn and limas), canned, with cream style corn
- Mushrooms, portabella, exposed to ultraviolet light, grilled
- Mushrooms, portabella, grilled
- Bulgur, dry
- Beans, kidney, royal red, mature seeds, cooked, boiled, without salt
- Beans, kidney, royal red, mature seeds, cooked, boiled with salt
- Cowpeas, catjang, mature seeds, cooked, boiled, without salt
- Cowpeas, catjang, mature seeds, cooked, boiled, with salt
- Cowpeas, common (blackeyes, crowder, southern), mature seeds, cooked, boiled, without salt
- Beans, black turtle soup, mature seeds, canned
- Pears, dried, sulfured, stewed, without added sugar
- Wheat flour, whole-grain
- Cowpeas, common (blackeyes, crowder, southern), mature seeds, cooked, boiled, with salt
- Beans, pink, mature seeds, cooked, boiled, with salt
- Beans, pink, mature seeds, cooked, boiled, without salt
- Potatoes, hashed brown, home-prepared
- Nuts, hazelnuts or filberts, blanched
- Soy protein isolate, potassium type, crude protein basis
- Soy protein isolate
- Soy protein isolate, potassium type
- Pigeon peas (red gram), mature seeds, cooked, boiled, without salt
- Pigeon peas (red gram), mature seeds, cooked, boiled, with salt
- Rice, white, with pasta, dry
- Plums, dried (prunes), stewed, with added sugar
- Apricots, dried, sulfured, uncooked
- Pomegranates, raw
- Tomato products, canned, sauce, with onions
- Lima beans, large, mature seeds, cooked, boiled, without salt
- Lima beans, large, mature seeds, cooked, boiled, with salt
- Seeds, pumpkin and squash seeds, whole, roasted, with salt added
- Seeds, pumpkin and squash seeds, whole, roasted, without salt
- Jew's ear, (pepeao), raw
- Broadbeans (fava beans), mature seeds, cooked, boiled, with salt
- Broadbeans (fava beans), mature seeds, cooked, boiled, without salt
- Orange juice, frozen concentrate, unsweetened, undiluted
- Barley malt flour
- Beans, great northern, mature seeds, cooked, boiled, with salt
- Beans, great northern, mature seeds, cooked, boiled, without salt
- Mushrooms, brown, Italian, or Crimini, raw
- Catsup, low sodium
- Catsup
- Lima beans, large, mature seeds, canned
- Seeds, sesame flour, high-fat
- Beans, kidney, red, mature seeds, cooked, boiled, with salt
- Beans, kidney, red, mature seeds, cooked, boiled, without salt
- Beans, kidney, all types, mature seeds, cooked, boiled, with salt
- Potatoes, white, flesh and skin, raw
- Figs, dried, uncooked
- Couscous, dry
- Kamut, cooked
- Rice, white, short-grain, raw
- Rice, white, short-grain, raw, unenriched
- Beans, great northern, mature seeds, canned
- Chickpeas (garbanzo beans, bengal gram), mature seeds, canned
- Spelt, cooked
- Refried beans, canned, vegetarian
- Seeds, sesame meal, partially defatted
- Mushrooms, morel, raw
- Cardoon, raw
- Seeds, breadnut tree seeds, raw
- Beans, cranberry (roman), mature seeds, cooked, boiled, with salt
- Beans, cranberry (roman), mature seeds, cooked, boiled, without salt
- Cowpeas, common (blackeyes, crowder, southern), mature seeds, canned with pork
- Rice, white, long-grain, regular, raw, enriched
- Rice, white, long-grain, regular, raw, unenriched
- Seeds, sesame flour, partially defatted
- Garlic, raw
- Potatoes, scalloped, dry mix, unprepared
- Seeds, sesame flour, low-fat
- Beans, baked, home prepared
- Soymilk, original and vanilla, with added calcium, vitamins A and D
- Tofu, hard, prepared with nigari
- Potatoes, scalloped, home-prepared with butter
- Potatoes, scalloped, home-prepared with margarine
- Potato, flesh and skin, raw
- Poi
- Soy protein isolate, PROTEIN TECHNOLOGIES INTERNATIONAL, SUPRO
- Vegetarian meatloaf or patties
- Refried beans, canned, traditional style (includes USDA commodity)
- Potatoes, au gratin, home-prepared from recipe using butter
- Potatoes, au gratin, home-prepared from recipe using margarine
- Lima beans, thin seeded (baby), mature seeds, cooked, boiled, without salt
- Lima beans, thin seeded (baby), mature seeds, cooked, boiled, with salt
- Bananas, dehydrated, or banana powder
- Avocados, raw, California
- Tomato products, canned, sauce, spanish style
- Tofu, soft, prepared with calcium sulfate and magnesium chloride (nigari)
- Asparagus, frozen, unprepared
- Radishes, oriental, raw
- Winged bean tuber, raw
- Spinach, canned, regular pack, drained solids
- Yardlong beans, mature seeds, cooked, boiled, without salt
- Yardlong beans, yardlong, mature seeds, cooked, boiled, with salt
- Lupins, mature seeds, cooked, boiled, with salt
- Lupins, mature seeds, cooked, boiled, without salt
- Edamame, frozen, unprepared
- Beans, kidney, all types, mature seeds, cooked, boiled, without salt
- Beans, navy, mature seeds, cooked, boiled, with salt
- Beans, navy, mature seeds, cooked, boiled, without salt
- Potatoes, russet, flesh and skin, raw
- Potatoes, white, flesh and skin, baked
- Guavas, common, raw
- Oat bran, raw
- Refried beans, canned, fat-free
- Seeds, breadfruit seeds, roasted
- Beans, pinto, mature seeds, cooked, boiled, without salt
- Beans, pinto, mature seeds, cooked, boiled, with salt
- Potatoes, au gratin, dry mix, unprepared
- Apricots, dried, sulfured, stewed, with added sugar
- Beans, navy, mature seeds, sprouted, raw
- Beans, cranberry (roman), mature seeds, canned
- Beans, baked, canned, plain or vegetarian
- Mushrooms, canned, drained solids
- Amaranth grain, cooked
- Cherries, sweet, canned, light syrup pack, solids and liquids
- Turnip greens, cooked, boiled, drained, with salt
- Turnip greens, cooked, boiled, drained, without salt
- Rice flour, brown
- Cherries, sweet, canned, extra heavy syrup pack, solids and liquids
- Beet greens, cooked, boiled, drained, without salt
- Beet greens, cooked, boiled, drained, with salt
- Mushrooms, oyster, raw
- Beans, black, mature seeds, cooked, boiled, without salt
- Beans, black, mature seeds, cooked, boiled, with salt
- Cherries, sweet, canned, pitted, heavy syrup pack, solids and liquids
- Beans, kidney, red, mature seeds, canned
- Quinoa, cooked
- GARDENBURGER, Homestyle Classic Veggie Burger
- Peas, split, mature seeds, cooked, boiled, without salt
- Peas, split, mature seeds, cooked, boiled, with salt
- Lambs quarters, cooked, boiled, drained, with salt
- Lambsquarters, cooked, boiled, drained, without salt
- Sweet potato, canned, vacuum pack
- Spinach, frozen, chopped or leaf, cooked, boiled, drained, without salt
- Spinach, frozen, chopped or leaf, cooked, boiled, drained, with salt
- Potatoes, baked, flesh and skin, with salt
- Potato, baked, flesh and skin, without salt
- Beans, baked, canned, with pork and sweet sauce
- Nuts, cashew butter, plain, with salt added
- Nuts, cashew butter, plain, without salt added
- Nuts, coconut meat, raw
- Tomato powder
- Yautia (tannier), raw
- Beans, kidney, all types, mature seeds, canned
- Succotash, (corn and limas), cooked, boiled, drained, with salt
- Succotash, (corn and limas), cooked, boiled, drained, without salt
- Blackberries, canned, heavy syrup, solids and liquids
- Rye flour, medium
- Beans, pinto, mature seeds, canned
- Onion rings, breaded, par fried, frozen, unprepared
- Seeds, cottonseed flour, low fat (glandless)
- Nuts, pecans, dry roasted, with salt added
- Nuts, pecans, dry roasted, without salt added
- Turnip greens, frozen, cooked, boiled, drained, with salt
- Beans, yellow, mature seeds, cooked, boiled, without salt
- Beans, yellow, mature seeds, cooked, boiled, with salt
- Cowpeas (Blackeyes), immature seeds, frozen, unprepared
- Broccoli raab, cooked
- Soybeans, green, raw
- Sweet potato, canned, syrup pack, drained solids
- Peas, mature seeds, sprouted, raw
- Seeds, breadfruit seeds, raw
- Potatoes, mashed, home-prepared, whole milk and margarine added
- Sweet potato, frozen, cooked, baked, with salt
- Sweet potato, frozen, cooked, baked, without salt
- Sweet potato, cooked, baked in skin, without salt
- Figs, dried, stewed
- Potatoes, Russet, flesh and skin, baked
- Rice, white, glutinous, raw
- Mung beans, mature seeds, sprouted, cooked, stir-fried
- Semolina, enriched
- Semolina, unenriched
- Potato flour
- Mung beans, mature seeds, cooked, boiled, without salt
- Mung beans, mature seeds, cooked, boiled, with salt
- Cherries, sweet, canned, pitted, heavy syrup, drained
- Carissa, (natal-plum), raw
- Peanuts, all types, cooked, boiled, with salt
- Mushrooms, white, stir-fried
- Spinach, cooked, boiled, drained, without salt
- Spinach, cooked, boiled, drained, with salt
- Cowpeas (Blackeyes), immature seeds, frozen, cooked, boiled, drained, with salt
- Cowpeas (blackeyes), immature seeds, frozen, cooked, boiled, drained, without salt
- GARDENBURGER, Gourmet Baja Steak
- Sweet potato, frozen, unprepared
- Soymilk, original and vanilla, unfortified
- Soybeans, mature seeds, sprouted, cooked, steamed
- Soybeans, mature seeds, sprouted, cooked, steamed, with salt
- Jackfruit, raw
- Sweet potato, cooked, boiled, without skin, with salt
- Sweet potato, cooked, boiled, without skin
- Plums, dried (prunes), stewed, without added sugar
- Potatoes, mashed, home-prepared, whole milk added
- Soymilk (all flavors), nonfat, with added calcium, vitamins A and D
- Seeds, breadfruit seeds, boiled
- Macaroni, dry, enriched
- Macaroni, dry, unenriched
- Dates, deglet noor
- Apricots, dried, sulfured, stewed, without added sugar
- Peaches, dried, sulfured, stewed, without added sugar
- Chili with beans, canned
- Soymilk (All flavors), enhanced
- Potatoes, boiled, cooked in skin, skin, with salt
- Potatoes, boiled, cooked in skin, skin, without salt
- Artichokes, (globe or french), raw
- Potato salad, home-prepared
- Nuts, pine nuts, pinyon, dried
- Soy sauce made from soy and wheat (shoyu), low sodium
- Seeds, sunflower seed butter, with salt added
- Seeds, sunflower seed butter, without salt
- Beans, kidney, mature seeds, sprouted, raw
- Pasta, fresh-refrigerated, plain, as purchased
- Nuts, coconut meat, dried (desiccated), sweetened, shredded
- Mothbeans, mature seeds, cooked, boiled, with salt
- Mothbeans, mature seeds, cooked, boiled, without salt