Truss / On the Vine Tomato (Raw)
Vegetables · Vegetables
Raw truss or on-the-vine tomato is low FODMAP at 69 g in the Monash app. The 75 g portion is moderate in fructose and 93 g is high. Both the green and amber references are described as half a medium tomato, so that fraction alone does not identify a rating.
Serving sizes for truss / on the vine tomato (raw)
Truss/on-the-vine tomato, raw: 69 g green, 75 g amber and 93 g red. The half-medium descriptions overlap.
Tested serving sizes
| Serving | Amount | Main FODMAP | Rating |
|---|---|---|---|
| 1/2 medium | 75 g | Fructose 0.05 g | |
| 1/2 medium | 69 g | Fructose 0.05 g | |
| 2/3 medium | 93 g | Fructose 0.15 g |
Breakdown for 75 g
Is truss / on the vine tomato (raw) low FODMAP?
At 69 g, the six FODMAP indicators are green. Fructose turns amber at 75 g and red at 93 g, while lactose, mannitol, sorbitol, GOS and fructans remain green. The app describes the red point as around two-thirds of a medium tomato. Use these as listed reference portions rather than exact predictions of personal symptoms.
Truss / On the Vine Tomato (Raw) and IBS: what to know
Truss tomatoes vary in size, and a generous sandwich slice can differ considerably from a thin one. If you are comparing foods during an IBS trial, noting the raw weight and tomato type gives useful context. A tomato's traffic light does not describe the bread, spread or salad dressing eaten with it.
Gut-friendly ways to eat truss / on the vine tomato (raw)
Detach the tomato from its stem, wash it and weigh the raw slices or wedges you intend to use. For a shared salad, track your share of the tomato ingredient alongside the rest of the bowl. Use raw Roma tomato for that variety or canned round tomatoes with juice for a preserved product.
Frequently asked questions
Is half a truss tomato always a low FODMAP serving?
No. The checked entry uses half-medium labels for both 69 g green and 75 g amber. The actual weight makes the comparison more specific.
Can I use cherry-tomato portions for truss tomatoes?
Different tomato entries have their own portions. Match the variety described on the page rather than transferring a household count from smaller tomatoes.
Does this guide cover tomatoes roasted on the vine?
It verifies the raw entry only. The vine label identifies the food; it does not supply a tested portion conversion for a roasted dish.
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Sources and editorial notes
- Monash University FODMAP Diet App
Monash University FODMAP Diet app entry “Tomato, truss / on the vine, raw” checked directly on 27 September 2026. The portion weights, traffic-light ratings and FODMAP groups discussed here were verified in matching detail panels. Numerical FODMAP concentration estimates elsewhere in the catalogue were not validated by this check.