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Per 100g
Nutrition data source: USDA FoodData Central
Common measurement equivalents in grams
Yes, frozen onions retain most of their nutritional value because they are typically flash-frozen shortly after harvest. They provide the same antioxidants, Vitamin C, and fiber as fresh onions, making them a convenient and healthy alternative for cooking.
Frozen onions are rich in quercetin, an antioxidant that helps reduce inflammation and lower blood pressure. They also provide Vitamin C for immune support and sulfur compounds that may promote heart health and offer anti-cancer properties.
Yes, they are excellent for weight loss as they are very low in calories (32 per 100g) and contain virtually no fat. Their fiber content also helps you feel full longer, making them a great way to add flavor to meals without adding significant calories.
Yes, frozen onions can be included in a keto diet. While they contain about 7.5g of carbs per 100g, they are usually consumed in smaller portions, making the net carb impact relatively low for most low-carb meal plans.
Yes, unprepared frozen onions are naturally vegan and gluten-free. They consist solely of chopped onions with no added animal products or grains, making them safe for those with these dietary restrictions.
No, you do not need to thaw them. You can add frozen onions directly to hot pans for sautéing, or into soups, stews, and casseroles. Thawing them beforehand often results in a mushy texture due to the moisture released during the process.
Frozen onions are best used in cooked dishes. Because the freezing process breaks down the cell walls, they lose the crisp crunch of fresh onions and become soft once thawed, which is generally unappealing in raw salads or salsas.
unprepared chopped frozen onion is a versatile ingredient found in cuisines around the world. With 32 calories per 100g and 1.16 grams of protein, it's a nutritious addition to many dishes.
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Browse recipes →When stored properly in an airtight bag or container at 0°F (-18°C), frozen onions will maintain best quality for about 10 to 12 months. They remain safe to eat after that, but may develop freezer burn or lose their characteristic flavor.
Look for signs of severe freezer burn, such as heavy ice crystals or shriveled, discolored patches. If the onions have a dull color, a sour or 'off' odor when thawed, or a slimy texture, they should be discarded.
Frozen onions have a similar flavor profile to fresh onions but are much softer in texture once heated. They are ideal for recipes where onions are meant to be softened or caramelized, such as in sauces, soups, and stir-fries.