Foods high in Cysteine
Every food and ingredient below is ranked by measured Cysteine content per 100 g, drawn live from 32 USDA FoodData Central measurements. Values are laboratory-analysed or survey-derived, not estimated.
Top 24 foods highest in Cysteine
Ranked by Cysteine per 100g, across Foundation Foods and FNDDS ingredients.
Lowest in Cysteine
For contrast — the 8 lowest non-zero values on record, per 100g.
| # | Food or ingredient | Source | Per 100g (G) |
|---|---|---|---|
| 25 | Milk, reduced fat, fluid, 2% milkfat, with added vitamin A and vitamin D | Foundation Food | 0.035 |
| 26 | Milk, lowfat, fluid, 1% milkfat, with added vitamin A and vitamin D | Foundation Food | 0.036 |
| 27 | Milk, whole, 3.25% milkfat, with added vitamin D | Foundation Food | 0.038 |
| 28 | Milk, nonfat, fluid, with added vitamin A and vitamin D (fat free or skim) | Foundation Food | 0.038 |
| 29 | Soy milk, unsweetened, plain, shelf stable | Foundation Food | 0.0575 |
| 30 | Sausage, breakfast sausage, beef, pre-cooked, unprepared | Foundation Food | 0.17 |
| 31 | Cheese, ricotta, whole milk | Foundation Food | 0.18 |
| 32 | Sausage, turkey, breakfast links, mild, raw | Foundation Food | 0.19 |
More on Cysteine
What Cysteine is, how it is measured, and where these values come from.
Cysteine nutrient reference →Sourced from USDA FoodData Central — Foundation Foods; not yet through an editorial verification pass.
USDA release 2026-04-30. All values are per 100 g unless stated otherwise.