Leek

TLDRLast updated 7 October 2026

Separate the raw white bulb from the raw dark green leaves. Their reference portions differ, so a mixed portion of leek cannot simply use the green-leaf allowance. See Leek (White Bulb), Leek (Dark Green Leaves Only). Select only a preparation that matches your food.

Serving sizes for leek

Verification pending for this broad entry. Use the matching specific food for portion guidance; these legacy figures are not a shared allowance for every preparation.

Moderate
10 gabout 0.05 leeks
FructoseLow
LactoseLow
FructansLow
GOSLow
SorbitolLow
MannitolLow

Reference portions

Select an amount or rating to update your portion. These are reference portions, not exact cut-offs or recommended intakes.
Reference portions for Leek and their FODMAP ratings
ServingAmountFODMAP rating
Reference portionNot availableLow
Small amount (leaves only)
1/4 leek with bulb

Is leek low FODMAP?

Separate the raw white bulb from the raw dark green leaves. Their reference portions differ, so a mixed portion of leek cannot simply use the green-leaf allowance. This broad entry does not establish a verified portion for every food covered by its name.

Leek and IBS: what to know

For leek, keep the exact form and amount in mind. Check the complete ingredient list for the exact product; a gluten-free or sugar-free label is not a portion-specific FODMAP assessment. Monash: ingredient labels and FODMAPs. This public source supplies background, not verification of the numerical table.

Gut-friendly ways to eat leek

Separate the raw white bulb from the raw dark green leaves. Their reference portions differ, so a mixed portion of leek cannot simply use the green-leaf allowance. See Leek (White Bulb), Leek (Dark Green Leaves Only). Select only a preparation that matches your food.

Frequently asked questions

Which preparation should I choose?

Separate the raw white bulb from the raw dark green leaves. Their reference portions differ, so a mixed portion of leek cannot simply use the green-leaf allowance. See Leek (White Bulb), Leek (Dark Green Leaves Only). Select only a preparation that matches your food.

Can these preparations share one portion table?

Use the reference for the exact preparation. The existing broad table has not been verified for all of the foods covered by its name.

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Sources and editorial notes

Published and maintained by Gut Friendly. This guide has not been independently reviewed by a dietitian. Serving information comes from our food catalogue. Where references are listed, they explain the research and preparation differences. Check the original source for current portions.

Gut Friendly provides general information, not medical advice.