FODMAP food guide
Is large pickled onions low FODMAP?
FODMAP score
40
Moderate
In small portions — Large Pickled Onions is moderate in FODMAPs. Portion size decides whether it triggers symptoms.
FODMAPs present
Low-FODMAP serving
1 large onion, drained (30 g)
Becomes high FODMAP at
about 2 large onions (107 g) or more
Pickling leaches water-soluble fructans into the brine, so a DRAINED large pickled onion carries a real low serve: 30 g on the stricter programme (the other passes 45-60 g). Fructans turn high from about 107 g. Drain well, and check labels — some brines add garlic.
Seen a different rating somewhere else?+
Usually it's a portion difference, not a disagreement. This page scores large pickled onions at a serving of 1 large onion, drained (30 g); at about 2 large onions (107 g) or more it belongs in the high band. A source quoting the larger serve will call it high, and one quoting the smaller will call it low — the same food, measured at two different amounts.
Based on published FODMAP research and reviewed reference data. Informational only — not medical advice. Tolerance is individual; verify with a dietitian during the elimination phase.
How much is OK?
This food's verdict depends on the serving. The bands below show where the load builds, group by group.
Fructans
The conservative programme’s serve; the other passes 45-60 g low. High from about 107 g. All figures assume the brine is drained off.
Bands reflect published FODMAP research for typical preparations — individual tolerance varies, especially mid-reintroduction.
Go deeper
Related foods — gentlest first
Green scores are the real swaps; matching numbers are just relatives, not alternatives.