Onions, for use on a sandwich vs. Mushrooms, for use on a sandwich vs. Pepper, for use on a sandwich
Side-by-side comparison of nutrient values per 100g edible portion, sourced directly from the U.S. Department of Agriculture's FoodData Central (FDC) - SR Legacy reference foods and FDC Foundation foods (April 2026 release). Each value reflects USDA's standardized laboratory analysis methodology under USDA data-documentation methodology.
Mushrooms, for use on a sandwich has the most protein of the foods compared, at 2.9 g per 100g.
| Nutrient | Onions, for use on a sandwich | Mushrooms, for use on a sandwich | Pepper, for use on a sandwich |
|---|---|---|---|
| Protein | 0.86 G | 2.9 G | 0.81 G |
| Total lipid (fat) | 0.08 G | 0.35 G | 0.12 G |
| Carbohydrate, by difference | 8.5 G | 4.1 G | 5.7 G |
| Energy | 38 KCAL | 31 KCAL | 27 KCAL |
| Total Sugars | 5.8 G | 2 G | 3.3 G |
| Fiber, total dietary | 1.7 G | 1.7 G | 1 G |
| Calcium, Ca | 17 MG | 5 MG | 6 MG |
| Iron, Fe | 0.24 MG | 0.23 MG | 0.27 MG |
| Potassium, K | 171 MG | 371 MG | 188 MG |
| Sodium, Na | 1 MG | 6 MG | 0 MG |
| Cholesterol | 0 MG | 0 MG | 0 MG |
| Fatty acids, total saturated | 0.04 G | 0.05 G | 0.06 G |
Values shown are per 100g edible portion from Source: USDA FoodData Central Retrieved and formatted by GetFoodFacts. For interactive comparison of up to three foods with macro bars and charts, use the main compare tool.