S2-C13: soft pan loaf with boiling-water flour scald (yudane)
S2-C13: soft pan loaf with boiling-water flour scald (yudane). The lesson tests a 20% flour yudane.
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Lesson block: soft pan loaf with a boiling-water scald (yudane)
S2-C13 tests the simple way of scalding part of the flour with boiling water — yudane: 80 g of flour + 80 g of boiling water cool down and go into the dough. Part of the water is bound before mixing, and the crumb stays fresh longer.
- Lesson question
- Will a boiling-water scald of 20% of the flour hold water in the crumb longer than a plain mix, without cooking a separate tangzhong at 65 °C.
- Main variable
- Yudane: 80 g flour (20%) + 80 g boiling water (1:1), stirred with a spoon, covered, and cooled to 25–30 °C before mixing; all the scald water and flour count in the overall formula.
- Why this way
- Yudane is simpler than tangzhong: no thermometer or stove needed. Boiling water instantly gelatinizes the flour starch and binds water into a gel; in the final dough this gel releases moisture more slowly than free water.
- Expected flavor
- Moist tender crumb, a slice still soft at 24 and 48 hours, wheat aroma without a milky-creamy note (the formula contains no milk), golden crust, clean slicing.
- Learning format
- Single-day sheet with the scald made 1–2 hours ahead: in the evening pour boiling water over the flour and cover; in the morning build the dough with the whole scald; mix, fermentation, shaping, final proof, bake.
Theory
- Yudane and tangzhong are different techniques: yudane = 1:1 boiling water without stove heating; tangzhong = cooking at 65 °C at about 1:5; tangzhong gives a looser gel, yudane a stiffer one.
- Terminology matters: in Russian recipes "zavarka" usually means yudane (boiling water), not tangzhong; mixing them up is a common translation error.
- 20% of the flour in the scald is the working bound for yudane; above 25% the crumb turns dense, below 15% the effect barely reads.
- The scald must fully cool to 25–30 °C before mixing; a hot scald kills the yeast and denatures gluten.
- If the scald is made the evening before, cover it with film in contact so no skin forms; stir before mixing.
- Final dough hydration is 75% (300 g of water on 400 g of flour), as in the S2-C9 base, but all the water enters through the scald plus the free part.
Checkpoints
- The boiling water actually boils (95–100 °C), not cooled-down hot water.
- The scald has cooled to 25–30 °C before mixing (probe check).
- The mix treats the scald as ordinary flour plus water, with no separate incorporation step.
- Dough temperature after mixing 25–26 °C.
- At 48 hours compare the slice with the S2-C6 base: the crumb should be clearly moister.
Sensory
- Crust
- color, thickness, crunch, score opening, bitterness, toastiness
- Crumb
- moisture, elasticity, gumminess, chew, pore size and distribution
- Aroma
- separate crust and crumb aroma: floury, yeasty, milky, rye, malty, spicy
- Flavor
- sweetness, salt, acidity, flouriness, depth, aftertaste
- Score
- 0–10 plus one decision: repeat, increase fermentation, change flour, change bake, or close the lesson
What comes next
- If the bread is dense, check whether the scald had cooled before mixing; a hot scald breaks the structure.
- If the crumb is not clearly moister than the base, raise the scald to 25% of the flour or try tangzhong (a separate lesson at 65 °C).
- The next lesson S2-C14 moves to old dough as the route to flavor depth.
S2-C13 continues the soft track and tests a 20% boiling-water flour scald (yudane).
The main hypothesis of the lesson: A boiling-water scald of part of the flour holds water and gives softness without cooking a tangzhong.
What This Lesson Studies
- the link between composition and softness
- proofing of a pan loaf
- evaluation of freshness and the slice
- How to record the result so that the next repeat changes one variable.
- How to tell a formula error from a process error.
Why This Lesson Belongs Here
The lesson sits after earlier soft loaves to isolate the variable: a 20% boiling-water flour scald.
Theory
A soft pan loaf needs alignment of composition, mixing, proof, bake, and cooling. In this lesson the composition changes only as much as needed to test the main variable.
| Mechanism | Practical conclusion |
|---|---|
| Main variable | boiling-water scald of 20% of the flour |
| Fermentation | Judge doneness by dough state, not by the timer |
| Bake | Check doneness by temperature and crust state |
| Cooling | Evaluate crumb after stabilization |
S2-C13 Lab Protocol
| Control point | What to record for a boiling-water scald (yudane) | Why |
|---|---|---|
| Scald preparation | 80 g flour (20% of 400 g) + 80 g of 100 °C water | water immediately after boiling, not cooled down |
| Scald mix | stir with a spoon to uniform, without lumps | if there are lumps, the starch does not gelatinize evenly |
| Scald cooling | 30–40 minutes at room temperature, spread in a thin layer; down to 30–40 °C by mix time | a hot scald kills the yeast; a cold one mixes in poorly |
| Scald appearance | dense pudding or paste, soft and stretchy | if it is liquid, there was not enough flour or the water was not boiling |
| Before mixing | 320 g flour + 220 g water + all 160 g of scald + the rest | total water in the formula: 220 g + 80 g in the scald = 300 g = 75% |
| After mixing | dough temperature 25–26 °C, dough soft, not sticky | the scald binds water and makes the dough soft and elastic |
| After bulk | rise of 1.7–2 times | classic soft fermentation |
| After cooling | slice: melting, stretchy crumb; compare with C1 (tangzhong) | yudane gives a more stable structure than tangzhong |
| At 24 hours | crumb retains softness | the main effect of the scald is extended freshness |
Advanced Technological Map
Work by pan-loaf logic: even mixing, controlled rise, tight roll, moderate bake, and full cooling.
Formula
| Ingredient | Grams | % of flour |
|---|---|---|
| White bread flour | 400 g | 100 |
| Water | 300 g | 75 |
| Sugar | 24 g | 6 |
| Butter | 24 g | 6 |
| Salt | 8 g | 2 |
| Fresh yeast | 6 g | 1.5 |
Practical Technique
Prepare the scald in advance: pour 100 °C water over 20% of the flour while whisking constantly, so there are no lumps. Cool to 30–40 °C before adding to the dough (spread in a thin layer so it cools in 30–40 minutes) — a hot scald will kill the yeast. Scalded starch binds more water, so the dough may look drier visually; do not add flour, this is normal. The scald keeps at room temperature for up to 8 hours; longer than that it loses effectiveness.
Diagnosing Errors
| Symptom | Cause for a boiling-water yudane | What to check |
|---|---|---|
| Scald liquid like jelly | not enough flour (less than 80 g) or the water was not boiling | ratio 1:1, water exactly 100 °C right off the boil |
| Scald has lumps | water poured in a thin stream, the flour did not disperse | pour all water in at once, stir vigorously with a spoon for 30 seconds |
| Yeast does not activate | scald added hot (over 40 °C) | cool the scald to 30–40 °C before combining |
| Bread dense | scald mixed in poorly, lumps visible in the dough | when mixing, tear the scald with your hands into 5–6 pieces |
| Crumb no softer than usual | scald share is too low | 20% of flour in the scald is the minimum; can be raised to 25% |
| Crumb dry as usual at 24 hours | scald added cold from the fridge | keep the scald at room temperature for up to 8 hours, not in the cold |
| Double-count of water | water in the formula recorded as only 220 g | real water = 220 g + 80 g in the scald = 300 g = 75% |
How To Evaluate The Result
| What to evaluate | Good sign |
|---|---|
| Shape | matches the lesson goal |
| Crust | does not taste bitter and does not block softness |
| Crumb | stable after cooling |
| Flavor | tied to the main variable |
| Repeatability | clear what to change next time |
Grading Rubric
| Criterion | 0 points | 1 point | 2 points |
|---|---|---|---|
| Water temperature for the scald | below 90 °C (not boiling) | 95–100 °C | 100 °C right off the boil |
| Flour:water ratio in the scald | other than 1:1 | 1:1 imprecise | 80 g flour + 80 g water (strict 1:1) |
| Scald cooling time before mixing | less than 15 minutes (still hot) | 15–30 minutes | 30–40 minutes in a thin layer, down to 30–40 °C |
| Scald distribution in the dough | scald lumps visible on the slice | even | like a soft pudding in the dough, indistinguishable |
| Crumb the next day | dry | retains softness | soft and stretchy like S2-C1 tangzhong |
| Hidden water accounted for | water in the formula 220 g without notes | ”+80 g in the scald” recorded | explicitly recorded: real water 300 g = 75% |
| Comparison with C1 (tangzhong) | not done | basic tasting | detailed comparison at 4 h, 24 h, 48 h |
Control Questions
- Was the water for the scald brought to 100 °C right before pouring?
- Was the ratio in the scald strictly 1:1 — 80 g flour + 80 g water?
- Was the scald stirred without lumps (a dense pudding)?
- Did the scald cool to 30–40 °C before combining with the yeast?
- During mixing, was the scald broken into 5–6 pieces for even distribution?
- Is it recorded in the journal: water 220 g + 80 g in the scald = 300 g = 75%?
- Was dough temperature after mixing 25–26 °C?
- After 24 hours, was the crumb compared with C1 (tangzhong) and the difference recorded?
- Was the scald kept at room temperature, not in the fridge, and for no more than 8 hours?
Lesson Conclusion
If the boiling-water scald of 20% of the flour is properly cooled to 30–40 °C before mixing, the crumb held moisture through 72 hours (loss below 15%) and is noticeably more tender than the S2-A1 baseline — the lesson is closed. Next step: advanced recipes with a scald (for example a Japanese milk bread or a rye-wheat with a scald, R1-C4). If the crumb came out gummy and raw, drop the scald share to 15% or extend the bake by 5 minutes. If the effect does not read, check that the scald went through full gelatinization (the mass should become as thick as pastry cream).
Theory Sources
- King Arthur Baking: water roux and bread softness — source for proportions, technique, or lesson diagnostics.
- BAKERpedia: starch gelatinization — source for proportions, technique, or lesson diagnostics.
- King Arthur Baking: sandwich bread — source for proportions, technique, or lesson diagnostics.
Ingredients
| Component | Grams | Baker's % |
|---|---|---|
| White bread flour | 400 g | 100% |
| Water | 300 g | 75% |
| Sugar | 24 g | 6% |
| Butter | 24 g | 6% |
| Salt | 8 g | 2% |
| Fresh yeast | 6 g | 1.5% |
Ingredient details
White bread flour
- Author's brand
- MukaMuka 13.5% protein (mukamuka.ru)
- Alternatives
- Aleyna Vivapol 12-13%, Makfa premium grade
Water
- Author's brand
- Tap water through Barrier Iron x2 filter
- Alternatives
- any filtered or bottled drinking water
Sugar
- Author's brand
- White granulated sugar, no specific brand
- Alternatives
- any white sugar; for brown use Mistral demerara
Butter
- Author's brand
- Vologodskoe 82.5% (VkusVill)
- Alternatives
- any 82.5% butter (Anchor, President, Prostokvashino)
Salt
- Author's brand
- Pink Himalayan salt
- Alternatives
- sea or table salt (avoid iodized)
Fresh yeast
- Author's brand
- Lux (Voronezh) fresh or Ayrek (homemade)
- Alternatives
- any fresh yeast in a 100 g pack
Conditions and equipment
Conditions
- Status
- S2-C13: theoretical learning lesson, published with a notice
- Course block
- soft wheat pan loaf
- Constraint
- do not add fillings and do not change several parameters at once
- Lesson closure condition
- The lesson closes when the 20% yudane is properly cooled and its contribution 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
253 kcal
protein 7.3 g · fat 3.9 g · carbs 46.4 g
Per slice (50 g)
127 kcal
protein 3.7 g · fat 2 g · carbs 23.2 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
Mix 80 g of flour with 80 g of boiling water from the total formula, stir without dry lumps, and cool to a warm state.
-
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.
-
Cool and evaluate
Cool fully, slice, and record a conclusion about the main lesson variable.
For readers who want to understand why the formula changed.
S2-C13 hypothesis
A boiling-water scald of part of the flour holds water and gives softness without cooking a tangzhong.
Iteration analysis
01 One variable matters more than a beautiful formula
- Observation
- The lesson variable — a 20% boiling-water flour scald — is often mixed with other edits.
- Hypothesis
- A boiling-water scald of part of the flour holds water and gives softness without cooking a tangzhong.
- Decision and why
- Keep one controlled variable and test it in a pan loaf.
- Conclusion
- stable soft slice; a clear conclusion on the main lesson variable
02 The working sheet should match the formula
- Observation
- Ingredients, stages, and schedule are written so that the working sheet matches the formula.
- Hypothesis
- If formula and sheet diverge, the tasting conclusion loses meaning.
- Decision and why
- Added formula math, schedule with relative times, and comments for each step.
- Conclusion
- Formula, working sheet, and tasting conclusion must stay tied to one lesson variable.
Version history
- v1.0May 24, 2026in development
- Problem
- The main S2 track needs a lesson: soft pan loaf with a boiling-water flour scald.
- Change
- Created lesson S2-C13: soft pan loaf with a boiling-water flour scald.
Questions
Why is S2-C13 placed here in the course?
The lesson sits after earlier soft loaves to isolate the variable: a 20% boiling-water flour scald (yudane).
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?
Compare the crumb with the S2-A1 baseline at 24 and 72 hours: with a scald, a slice should stay moist and elastic for longer. If a slice has become gummy, the scald was not fully cooled before mixing. If there is no difference from the baseline, raise the share of scalded flour to 25–30% or raise the scald temperature.