Foods high in cystine

Soy based protein powder tops the list with 0.72 g per 100 g. Ranked from 4,715 everyday foods (not packaged products); dried spices, protein powders and regional specialties are left out.

Per 100 gPer servingPer 100 calories
All foodsBakedBeefBeveragesBreakfast CerealsCereal Grains & PastaDairy & EggFast FoodsFats & OilsFinfish & ShellfishFruits & Fruit JuicesLamb, Veal, & GameLegumes & LegumeMeals, Entrees, & Side DishesNut & SeedPorkPoultryRestaurant FoodsSausages & Luncheon MeatsSnacksSoups, Sauces, & GraviesSweetsVegetables & Vegetable
  1. 1Soy based protein powderBeverages0.72 g
  2. 2Beverages, coffee, instant, regular, powderBeverages0.2 g
  3. 3Instant decaffeinated coffee, powderBeverages0.19 g
  4. 4Instant coffee, with chicoryBeverages0.15 g
  5. 5Vanilla shake, fast foodBeverages0.038 g
  6. 6Beverages, Malted drink mix, natural, powder, prepared with whole milkBeverages0.034 g
  7. 7Beverages, coffee substitute, cereal grain beverage, powder, prepared with whole milkBeverages0.031 g
  8. 8Fast food strawberry shakeBeverages0.031 g
  9. 9Beverages, Strawberry-flavor beverage mix, powder, prepared with whole milkBeverages0.028 g
  10. 10Coffee cream liqueur, 34 proofBeverages0.026 g
  11. 11Beverages, Malted drink mix, chocolate, powder, prepared with whole milkBeverages0.023 g
  12. 12Beverages, chocolate-flavor beverage mix, powder, prepared with whole milkBeverages0.018 g
  13. 13Chocolate syrup, prepared with whole milkBeverages0.017 g
  14. 14Beverages, Carob-flavor beverage mix, powder, prepared with whole milkBeverages0.016 g
  15. 15Beverages, Eggnog-flavor mix, powder, prepared with whole milkBeverages0.015 g
  16. 16Peanut meal supplement drink, cannedBeverages0.01 g
  17. 17Chocolate almond milk, ready-to-drinkBeverages0.005 g
  18. 18Clam and tomato juice, cannedBeverages0.003 g
  19. 19Orange breakfast drink, frozen concentrateBeverages0.003 g
  20. 20Instant lemon tea, with ascorbic acidBeverages0.003 g
  21. 21Coffee, brewed with tap waterBeverages0.002 g
  22. 22Decaffeinated coffee, brewed with tap waterBeverages0.002 g

More rankings

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Source: USDA FoodData Central. Per serving uses each food's typical USDA portion. Daily Values are the FDA's for adults and children 4 years and older.