Kombu Seaweed (Unwiped, Soaked, Drained, Japan)
Vegetables · Seaweed
Unwiped kombu that has been soaked and drained is low FODMAP at 5 g, approximately a quarter of a ribbon, in the Japan-labelled Monash entry. The larger references are 163 g, around five and a half ribbons, rated moderate, and 246 g, about eight ribbons, rated high.
Serving sizes for kombu seaweed (unwiped, soaked, drained, japan)
Japanese kombu, unwiped, soaked, drained: 5 g green, 163 g amber and 246 g red in mannitol. No dry-ribbon conversion or broth rating was verified.
Tested serving sizes
| Serving | Amount | Main FODMAP | Rating |
|---|---|---|---|
| 1/4 ribbon | 5 g | Mannitol 0.01 g | |
| 5 1/2 ribbons | 163 g | Mannitol 0.33 g | |
| 8 ribbons | 246 g | Mannitol 0.5 g |
Breakdown for 0.25 ribbons
Is kombu seaweed (unwiped, soaked, drained, japan) low FODMAP?
Mannitol changes to amber at 163 g and red at 246 g. The other five indicators remain green. Each of those figures belongs to the full preparation named in the source: unwiped, soaked and drained. A dry ribbon weight is not interchangeable with a weight after soaking.
Kombu Seaweed (Unwiped, Soaked, Drained, Japan) and IBS: what to know
For a meal containing this exact preparation, identify the amount of drained kombu allocated to your serving. The large comparison portions should not become meal targets. FSANZ's seaweed monitoring also highlights iodine variability and possible excess; these carbohydrate results do not establish a safe or desirable iodine dose.
Gut-friendly ways to eat kombu seaweed (unwiped, soaked, drained, japan)
Keep the preparation and weight together in your recipe notes. If your product is listed simply as dried kombu or kelp, consult that separate entry and its serving-label caveat. A pot of dashi with the kombu removed was not assessed here, nor was a prepared seaweed salad containing dressings or other seaweeds.
Frequently asked questions
Should I weigh this kombu before or after soaking?
The source specifies soaked and drained kombu. Use that preparation state rather than substituting the starting dry weight.
Do the larger ribbon counts recommend how much to eat?
No. They are comparison references in the app, not recommended quantities for a meal or an iodine intake target.
Can I use the green rating for every kombu dish?
Only the named ingredient preparation was checked. Different processing, additional ingredients and the resulting cooking liquid need their own assessment.
Check a whole plate in seconds.
Not sure about a whole meal? Scan it with the Gut Friendly app.
Get the appRelated foods
Sources and editorial notes
- Monash University FODMAP Diet App
Monash University FODMAP Diet app entry “Seaweed, kombu, unwiped, soaked, drained” 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.
- FSANZ — Survey of iodine levels in seaweed
Iodine context checked 27 September 2026; no iodine dose was derived from the FODMAP figures.