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Per 100g
Nutrition data source: USDA FoodData Central
Common measurement equivalents in grams
Yes, small red onions are very healthy as they are low in calories and packed with nutrients. They are particularly rich in anthocyanins and quercetin, antioxidants that help reduce inflammation and protect against chronic diseases.
A 100g serving of red onion contains approximately 40 calories, 1.1g of protein, 9.34g of carbohydrates, and 0.1g of fat. They are also a good source of fiber and vitamin C.
Yes, red onions are keto-friendly when consumed in moderation. While they contain about 9.34g of carbs per 100g, the amount typically used in a single serving is small enough to fit within daily carbohydrate limits.
Small red onions have a mild to sweet flavor compared to white or yellow onions. They provide a crisp texture and a subtle peppery bite, which makes them a favorite for raw preparations.
Absolutely. Red onions are most commonly eaten raw in salads, sandwiches, and salsas because of their mild flavor and vibrant color. Eating them raw also preserves the highest levels of their beneficial sulfur compounds.
To mellow the flavor of raw red onions, soak the slices in a bowl of cold water or a light vinegar solution for about 10 to 15 minutes. This removes some of the pungent sulfur compounds while keeping the onion crunchy.
Whole red onions should be stored in a cool, dry, and dark place with plenty of air circulation, where they can last for several weeks. Once cut, they must be stored in an airtight container in the refrigerator and used within 7 to 10 days.
small red onion is a versatile ingredient found in cuisines around the world. With 40 calories per 100g and 1.1 grams of protein, it's a nutritious addition to many dishes.
Explore more ingredients in the vegetable category with complete nutrition information.
View all vegetable →Discover 2 recipes featuring small red onion with step-by-step instructions.
Browse recipes →A spoiled red onion will feel soft or mushy to the touch and may have visible dark spots or mold. If it emits a foul or unusually strong odor, or if the inner layers appear slimy, it should be discarded.
Yes, red onions contain antioxidants and compounds like quercetin that may help lower blood pressure and cholesterol levels. Their anti-inflammatory properties also contribute to overall cardiovascular wellness.
Red onions are an excellent source of prebiotics, which are non-digestible fibers that feed beneficial gut bacteria. This helps maintain a healthy balance of microbes in the digestive system and improves overall gut function.