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onion
Vegetables
Trigger checker for onion
FODMAP ratingHigh FODMAP
See FODMAP status, histamines, salicylates, oxalates, and diet compatibility for onion.
Related checkers
Compare onion across criteria
Triggers
Diets
Inflammation
✓ Fit
Vegan
✓ Fit
Vegetarian
✓ Fit
Paleo AIP
✓ Fit
Mediterranean
✓ Fit
DASH Diet
✓ Fit
EoE Compatible
✗ Avoid
FODMAPs
✗ Avoid
Low Fermentation
✗ Avoid
Priority ingredient notes
Serving size, prep, and portion notes for onion
Aromatic base that adds depth to soups, sauces, and sautes.
Typical serving
1/4 medium onion (about 50 g)
Best for
saute bases / soups / roasted trays
Prep notes
- Sweat slowly to mellow the bite.
- Slice thinly for quick pickles or salads.
- Rinse raw slices for a lighter flavor.
Portion notes
- A quarter onion is plenty for most pans.
- Thin slices distribute flavor across bowls.
- One tablespoon minced adds aroma without bulk.
Watch for
raw bite in salads / over-browning at high heat
Explore related in Vegetables
Compare similar foods to build a personalized list of swaps that work for your system.
FAQ
What does the FODMAP rating mean for onion?
High FODMAP: consider smaller servings or swap within the same group.
Is onion generally well tolerated?
FODMAPs (Avoid) and Fructans (Avoid) Start with those if you react.
What should I check next?
Compare within the Vegetables group.