Potato soft pan loaf
Wheat · pan loaf · enriched
Potato mash as a source of softness, moisture, and clean slicing: starch from boiled potato holds water in a soft, fine-crumbed pan loaf.
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Recipe
Current recipe
For baking now: the final working formula, ingredients, steps, and baking worksheet.
Taste & texture
Fine, tight crumb that stays moist and pillowy for two to three days — potato starch locks water into the crumb long after baking. The crust is thin and softens to a pale-golden skin as the loaf cools. Flavor is mildly sweet with a faint, savory potato undertone that reads more as depth and richness than any identifiable potato taste; egg and butter add a quiet butteriness. No sourness, no chew — the bite is tender and yielding, and slices hold together cleanly even when cut thin.
As described by: King Arthur Baking: potatoes for soft bread and rolls , ChainBaker: potato bread recipe
Baking worksheet
Good to know
Why is S2-C8 placed here in the course?
After the sourdough pan loaf, a neutral softness mechanism through starch is needed.
Can multiple parameters be changed at once?
No. The lesson is built around a single variable; other changes go into a separate version.
What counts as the main result?
Slice the loaf into thin pieces (5–7 mm): they should not tear and should not stick to the knife. Compare softness at 24 and 72 hours against the S2-A1 baseline scale. If a slice sticks, lengthen cooling before slicing or reduce the share of mash. If it is dry, add 10 g of water or extend mash cooling.
A potato pan loaf is a plain wheat sandwich loaf made softer by boiled potato instead of extra fat. Mashed potato carries gelatinized starch and the water bound up with it, so the crumb slices moist and fine and stays soft for days, with only a faint, savory potato note rather than a “boiled potato” taste.
How It’s Baked Around the World and Why
Potato bread is one of those ideas almost every baking culture arrived at independently, usually for the same down-to-earth reason: potatoes were cheap and plentiful when good wheat was not, and a boiled potato or its cooking water stretched the flour while quietly making the loaf better.
In Ireland and Scotland it lives on as the flat potato farl and tattie scone cooked on a griddle. Across the United States the soft, slightly sweet potato sandwich loaf and potato rolls (the squishy buns now famous for burgers) are direct descendants of thrift baking, where the potato’s water was prized for keeping bread fresh through a week. German and Eastern European Kartoffelbrot leans the same way, often with rye alongside. Even in commercial baking, dehydrated potato flake is added to sandwich bread for exactly the effect here — a softer, longer-keeping crumb.
Why potato works is starch chemistry, not magic. Boiling gelatinizes the potato’s starch granules so they swell and trap water, much like a tangzhong does, and that bound water rides through the oven into the finished crumb instead of evaporating. Potato starch also has no gluten, so it gently dilutes the wheat protein and shortens the bite, giving a tender, melting crumb without the greasiness of adding more butter. Bakers everywhere converged on potato because it is the cheapest way to buy softness and shelf life at once — which is exactly what this loaf is built to show.
Theory
Potato starch and pulp hold water and make the crumb more tender, but too much potato or too much added water tips the loaf into stickiness. The fix is to count the hidden water and keep the free water moderate: the mash and the egg already carry part of the liquid, so real hydration is 67.5% (234 g free water + 90 g from the mash), not the 48.75% the free water alone suggests. Mash the potato plain and smooth — no salt, butter, or milk, and no lumps — and cool it to room temperature before mixing, since a hot mash kills the yeast and lumps leave a dense, patchy crumb. Then judge each stage by the dough, not the clock.
| Lever | Practical takeaway | | --- | --- | | Potato mash 25% | softens and moistens the crumb through gelatinized starch | | Hidden water | mash adds ~90 g water; real hydration is 67.5%, so do not add flour | | Mash quality | plain and smooth, cooled to room temperature, or the yeast stalls | | Bake | check doneness by internal temperature (94–96 °C), not crust colour alone |
Formula
| Ingredient | Grams | % of flour | | --- | ---: | ---: | | White bread flour | 480 g | 100 | | Water | 234 g | 48.75 | | Potato mash | 120 g | 25 | | Egg | 60 g | 12.5 | | Sugar | 33.6 g | 7 | | Butter | 38.4 g | 8 | | Salt | 9.6 g | 2 | | Fresh yeast | 7.2 g | 1.5 |
Real hydration is 67.5%: 234 g of free water plus ~90 g of water carried in the 120 g of potato mash, against 480 g of flour. Mix the mash smoothly into the liquid with no lumps, and bake until the center fully stabilizes.
If Something Goes Wrong
- Dough sticks more than usual → this is normal at a real 67.5% hydration; do not add flour, just keep mixing to development.
- Crumb dense rather than fluffy → the mash was lumpy; pass it through a sieve or blender so it goes in smooth.
- Crumb dries out within 24 hours → the bake ran hot and drove off the bound water; drop the temperature by 5 °C and add about 5 minutes by probe.
- Dough rises poorly → the mash went in warm and stalled the yeast; mash at room temperature, not straight from cooking or the fridge, and hold dough temperature at 25–26 °C.
- “Boiled potato” flavor → the mash was too coarse or carried salt/butter; mash it smooth like thick cream, plain, with nothing added.
- Gray-green crust → the potato oxidized before mixing; make the mash just before use.
Theory Sources
- King Arthur Baking: potato bread — reference for potato proportions and technique in a soft loaf.
- King Arthur Baking: 100% whole wheat sandwich bread — reference for soft pan-loaf shaping and bake.
- BAKERpedia: bread staling — how starch and bound water affect staling and shelf life.
Ingredients
Change any amount — the rest rescale by the bread’s formula.
| Component | Grams | Baker's % |
|---|---|---|
| White bread flour | g | 100% |
| Water | g | 48.75% |
| Potato mash | g | 25% |
| Egg | g | 12.5% |
| Sugar | g | 7% |
| Butter | g | 8% |
| Salt | g | 2% |
| Fresh yeast | g | 1.5% |
Preferments, scalds, and old dough are shown as prepared components; their composition is listed in the row details and worksheet.
Ingredient details
White bread flour
- Brand the author uses
- MukaMuka 13.5% protein (mukamuka.ru)
- Alternatives
- Aleyna Vivapol 12-13%, Makfa premium grade
Water
- Brand the author uses
- Tap water through Barrier Iron x2 filter
- Alternatives
- any filtered or bottled drinking water
Potato mash
- Composition (for water math)
- boiled potato mashed plain without additions; ~90 g water + ~30 g solids per 120 g of mash. Real dough hydration is 324 g water on 480 g flour (67.5%), not 48.75% free water.
- Brand the author uses
- Home-made plain mash without milk or butter from Gala or Nevsky potatoes
- Alternatives
- any potato without green spots; do not use instant potato powder
Egg
- Quantity
- 1 egg (≈60 g of contents, no shell)
- Brand the author uses
- Chicken egg, ≈60 g of contents (no shell)
- Alternatives
- any fresh chicken egg; weigh without shell
Sugar
- Brand the author uses
- White granulated sugar, no specific brand
- Alternatives
- any white sugar; for brown use Mistral demerara
Butter
- Brand the author uses
- Vologodskoe 82.5% (VkusVill)
- Alternatives
- any 82.5% butter (Anchor, President, Prostokvashino)
Salt
- Brand the author uses
- Pink Himalayan salt
- Alternatives
- sea or table salt (avoid iodized)
Fresh yeast
- Brand the author uses
- Lux (Voronezh) fresh or Ayrek (homemade)
- Alternatives
- any fresh yeast in a 100 g pack
Conditions and equipment
Conditions
- Course block
- starch and moisture retention
- Constraint
- potato mash without milk or extra butter, so as not to mix variables
- Lesson closure condition
- The lesson closes when the potato mash has given up its starch to the crumb and the contribution of swapping 90 g of water for 120 g of mash to 72-hour moisture retention is recorded.
Equipment
- Pan
- Emile Henry Petit Moule Cake 1.1 L (ceramic, 22×9.5×6.5 cm) or a similar-volume metal 9×5 inch pan
- Mix
- planetary mixer with a hook, or hand kneading with time and temperature recorded
- Bake
- home oven, probe thermometer, cooling rack
Nutrition: how to eat this bread
Bread nutrition facts
Per 100 g of bread
268 kcal
protein 8 g · fat 5.4 g · carbs 46 g
Per slice (50 g)
134 kcal
protein 4 g · fat 2.7 g · carbs 23 g
Automatic calculation from USDA + Skurikhin database for the baked loaf after evaporation. Numbers are approximate: 1) the database covers ingredients, not finished dough; 2) bake water loss is assumed at 10% — actual loss depends on crust, time, and pan. Add 5–10% in calorie trackers if needed.
Bread is a source of starch and energy. Its nutrition depends on flour, fermentation, salt, enrichment, serving size, and the rest of the plate.
- Digestion
- More whole grain, fibre, and fermentation usually mean longer satiety. White flour eaten alone is generally digested faster.
- Helpful or harmful
- Bread is not poison or medicine by itself. Overall diet matters; current guidance prioritizes whole grains, vegetables, fruits, and pulses.
- Amount
- For most learning tastings, 1–2 slices, about 30–80 g, is enough depending on loaf density.
- Best pairings
- Pair with protein, vegetables, and moderate fat; avoid making it a large standalone portion with sweet drinks or sweet spreads.
How to eat
- Taste the bread plain for learning, then eat it as part of a balanced plate.
- Slice dense rye thinner; with soft white bread, make sure softness does not automatically increase the serving.
Limits
- Wheat and rye breads contain gluten.
- For medical conditions, adjust bread type and serving size with a clinician or dietitian.
Instructions
-
Setup
Weigh ingredients, prepare the pan and working sheet.
-
Mix
Combine ingredients to cohesion, then mix to a smooth soft dough.
-
Bulk fermentation
Leave the dough until visibly risen and gas-filled. Watch state, not just minutes.
-
Shape
Gently degas, shape a tight roll, and place into a greased pan.
-
Final proof
Proof until puffy with a slow returning finger mark.
-
Bake
Bake by the working sheet schedule to the target internal temperature.
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Cool and evaluate
Cool fully, slice, and record a conclusion about the main lesson variable.
Version history
- v1.1June 18, 2026in development
- Problem
- The egg was listed as 57 g, which does not correspond to one whole egg.
- Change
- Egg normalized to a whole egg: 57 → 50 g (1 egg); baker's percent 14.25 → 12.5.