Doughs & batters
Kartöfluflatbrauð dough
Kartöfluflatbrauð · A stiff, unleavened Icelandic dough made by kneading rye flour into cooked, mashed potatoes. It is rolled into thin round cakes and dry-fried on a hot griddle or cast-iron pan to make Kartofluflatbrauth flatbread, a traditional Icelandic accompaniment often eaten warm with butter.
The formula
2:1 cooked potato:rye flour by weight (e.g., 500 g potato : 250 g rye; add more rye as needed)
Rye quantity varies with potato moisture content; the goal is a stiff, dense dough that does not stick.
Identity
- Icelandic
- unleavened
- gluten-light
- potato-and-rye dough
- dry-fried on griddle
- two-ingredient foundation
Ingredients
| Base | cooked, peeled and cooled potatoes (mashed smooth) | Yields ~500 g per source [2]; over-processing to a gummy paste must be avoided. |
| Base | rye flour | Start with 250 g per 500 g potato; add more as needed to reach a stiff dough. Whole wheat flour may be partially substituted. |
| Seasoning | salt | Not consistently listed in traditional recipes; add to taste as modern cooks often do. |
Method
- 1Cook potatoes in their skins until tender, then peel and cool completely.Cooled, dry potatoes absorb rye flour without making a slack dough; hot mash would turn gummy.
- 2Mash the potatoes by hand or pass through a ricer until smooth.A food processor can overwork starches into a gluey texture; a lump-free mash keeps the dough pliable.
- 3Knead rye flour into the mash, starting with the base amount and adding more until a stiff, dense dough forms that does not stick.Variable potato moisture demands a judgment call on flour; the dough should feel firm and slightly tacky but not wet.
- 4Pinch off portions and roll each into a thin, round cake on a lightly floured surface.Thin rolling gives the characteristic crisp-yet-pliable flatbread after dry-frying.
- 5Dry-fry each cake on a hot, ungreased cast-iron griddle or hotplate until browned with small dark spots, flipping once.No fat is used; the dry, hot surface toasts the rye and drives off residual moisture for the classic spotted crust.
Techniques that matter
mashing or ricing
Produces evenly textured dough without overworking the potato starches into gumminess.
stiff-dough kneading
Creates a low-hydration dough that holds its shape on the griddle without spreading.
dry-frying on a hot griddle
No added fat; high dry heat gives the characteristic spotted, lightly charred surface.
Variations & derivatives
Rye-and-whole-wheat blendIceland (home kitchens)
Per source [2], whole wheat flour may be mixed in with the rye for a slightly lighter color.
Slightly enriched versionModern Scandinavian variations
Some cooks add a small amount of milk, butter or cream for a softer crumb, moving the dough toward a Norwegian-style lefse.
Used in these dishes
Substitutions
- rye flour → whole wheat flour (whole or partial) — Whole wheat may replace part or all of the rye; the dough becomes less elastic and slightly milder.
- cooked mashed potatoes → prepared potato flakes — Reconstitute flakes with minimal water so the final moisture matches the cooked-potato base ratio.
Troubleshooting
Dough is gummy, gluey, or elastic
Potatoes were over-processed (e.g., in a food processor) and starches became activated → Mash by hand or ricer next time; dust the gummy dough with a little extra rye flour and knead briefly to recover.
Dough sticks to hands and work surface
Insufficient rye flour for the potato's moisture content → Add rye flour a tablespoon at a time, kneading until the dough is stiff and non-sticking.
Flatbreads crack or split when rolled
Dough is too dry or has too much rye → Work in a tiny bit of potato or a few drops of water; let dough rest 5–10 minutes so the rye hydrates.
Flatbreads are pale or doughy inside
Griddle not hot enough or cakes rolled too thick → Preheat the pan fully, then roll the cakes as thin as practical and flip once spotted.