scored 92/100
Also known as dried onion, allium cepa powder, granulated onion
Onion powder is dehydrated, ground onion concentrating quercetin, organosulfur thiosulfinates, and prebiotic fructans for antioxidant and metabolic support.
1.3 g net carbs after fiber.
Representative amounts for this food, not measured for this item. Real content varies widely by variety, ripeness and storage.
These are the scored components, not a sum: the published score also reflects normalisation across the catalog, so the parts above will not add to 92.
Onion powder (Allium cepa) is dehydrated, milled onion that concentrates the vegetable's flavonoids and sulfur chemistry into a spice of about 341 kcal per 100g. Its signature antioxidant is quercetin, a flavonol with anti-inflammatory and cardioprotective activity, accompanied by organosulfur thiosulfinates released as the powder rehydrates and its enzymes act. The drying process also concentrates fructans—inulin-type prebiotic fibers that feed beneficial gut bacteria—reflected in roughly 15 g of fiber per 100g. Mineral density is notable, with about 1.24 mg manganese, 384 mg calcium, 117 mg magnesium, and 985 mg potassium per 100g, plus 1.0 mg vitamin B6 and 75 mcg folate. The combination of quercetin's free-radical scavenging and NF-κB inhibition, organosulfur vasodilatory effects, and prebiotic fiber makes onion powder a quietly functional pantry staple. As with garlic, its bioactive thiosulfinates form on enzyme contact, so brief rehydration maximizes activity, while quercetin remains stable through cooking.
Quercetin scavenges free radicals and inhibits NF-κB and inflammatory cytokine release
Concentrated inulin-type fructans act as prebiotics, fermenting to short-chain fatty acids that nourish colonocytes
Quercetin and organosulfur thiosulfinates promote vasodilation and improve endothelial function
Onion powder's flavonoids and prebiotic fibers have no circadian dependency and reward daily consistency.
Fasting-compatible
Culinary servings are negligible in calories; compatible with fasting.
Per 100 g of the default form. Bars show how much higher or lower onion powder is than the average across 76 peer foods in this category. Green means a favorable direction; amber means the opposite.
Onion Powder is classified as a herbs & spices. Onion powder is dehydrated, ground onion concentrating quercetin, organosulfur thiosulfinates, and prebiotic fructans for antioxidant and metabolic support.
Onion Powder scores 92/100 in Formulate, making it an exceptional choice. Its strongest contributions come from Vitamin B6, Copper, Manganese. The score blends nutrient density, fiber, healthy fats, protein quality, bioactive compounds, and glycemic impact.
Not particularly. A 2 g serving provides about 0.2 g of protein (~0% of the 50 g daily value).
Not really. A 2 g serving provides about 0.3 g of fiber (~1% of the 28 g daily value).
Yes — it fits comfortably in most keto plans. A 2 g serving has about 1.3 g of net carbs (1.6 g total minus 0.3 g fiber).
Best any time of day. Onion powder's flavonoids and prebiotic fibers have no circadian dependency and reward daily consistency.
A typical serving is around 2 g (~7 kcal), based on the FDA's Reference Amount Customarily Consumed for this food category. There's no fixed daily target — most adults benefit from rotating onion powder alongside several other herbs & spices sources.
Onion Powder pairs nicely with: Pair with garlic powder because their combined organosulfur compounds and quercetin offer additive cardiovascular and antimicrobial benefits; Combine with fat-containing dishes because quercetin absorption improves in the presence of dietary fat.
Encyclopedia entries that supply the same signature nutrients onion powder contributes. Click through to see clinical dose ranges, evidence quality, and bioavailable forms.
These are the nutrients onion powdercontributes meaningfully toward (≥10% DV per 100 g serving). Click one to see what it does in the body, which supplements concentrate it, and which other foods are top sources.