Top foods ranked by Cysteine content per 100 g. Data from USDA FoodData Central.
| # | Food | Per 100 g | Category | |
|---|---|---|---|---|
| 1 | Defatted Soy Flour | 1.0 g | Legumes and Legume Products | |
| 2 | Full-Fat Soy Flour | 0.8 g | Legumes and Legume Products | |
| 3 | Creamy Sesame Butter | 0.8 g | Nut and Seed Products | |
| 4 | Ground Flaxseed | 0.6 g | Nut and Seed Products | |
| 5 | Creamy Peanut Butter | 0.5 g | Legumes and Legume Products | |
| 6 | Raw Whole Almonds | 0.5 g | Nut and Seed Products | |
| 7 | Raw Pine Nuts | 0.5 g | Nut and Seed Products | |
| 8 | Creamy Almond Butter | 0.4 g | Nut and Seed Products | |
| 9 | Large Grade A Egg Yolk | 0.4 g | Dairy and Egg Products | |
| 10 | Large Grade A Egg White | 0.4 g | Dairy and Egg Products | |
| 11 | Large Grade A Whole Egg | 0.4 g | Dairy and Egg Products | |
| 12 | Raw English Walnut Halves | 0.4 g | Nut and Seed Products | |
| 13 | Raw Pecan Halves | 0.3 g | Nut and Seed Products | |
| 14 | Raw Mild Turkey Breakfast Sausage Links | 0.2 g | Sausages and Luncheon Meats | |
| 15 | Raw Mild Turkey Breakfast Links | 0.2 g | Sausages and Luncheon Meats | |
| 16 | Whole Milk Ricotta Cheese | 0.2 g | Dairy and Egg Products | |
| 17 | Whole Milk Ricotta Cheese | 0.2 g | Dairy and Egg Products | |
| 18 | Pre-Cooked Beef Breakfast Sausage | 0.2 g | Sausages and Luncheon Meats | |
| 19 | Pre-Cooked Beef Breakfast Sausage | 0.2 g | Sausages and Luncheon Meats | |
| 20 | Unsweetened Plain Soy Milk | 0.1 g | Legumes and Legume Products | |
| 21 | Unsweetened Plain Soy Milk | 0.1 g | Legumes and Legume Products | |
| 22 | Sweetened Plain Soy Milk | 0.0 g | Legumes and Legume Products | |
| 23 | Whole Milk | 0.0 g | Dairy and Egg Products | |
| 24 | Whole Milk | 0.0 g | Dairy and Egg Products | |
| 25 | Nonfat Skim Milk | 0.0 g | Dairy and Egg Products | |
| 26 | Nonfat Skim Milk | 0.0 g | Dairy and Egg Products | |
| 27 | 1% Low-Fat Milk | 0.0 g | Dairy and Egg Products | |
| 28 | 1% Low-Fat Milk | 0.0 g | Dairy and Egg Products | |
| 29 | 2% Reduced-Fat Milk | 0.0 g | Dairy and Egg Products | |
| 30 | 2% Reduced-Fat Milk | 0.0 g | Dairy and Egg Products | |
| 31 | Plain Unsweetened Oat Milk | 0.0 g | Beverages | |
| 32 | Unsweetened Almond Milk, Refrigerated | 0.0 g | Beverages | |
| 33 | Salted Butter Stick | 0.0 g | Dairy and Egg Products |