Summer Sourdough Crushed Ice & Water Temp Chart for a Hot 80 Degree (80°F / 27°C) Kitchen — Stand Mixer Knead 8-Min (75°F DDT)
4-factor Desired Dough Temperature (DDT) and 80 cal/g latent heat crushed-ice calculation for hitting 75°F dough in a hot 80°F room.
A 80 degrees (26.7°C) kitchen demands careful water temperature discipline. With stand mixer knead 8-min (75°f ddt) generating +14°F and every ingredient starting at 80 degrees, the 4-factor DDT equation resolves to 46°F (7.8°C) for the mix water if you want a 75°F (23.9°C) final dough. Substituting 56g of the 350g with crushed ice and keeping 294g of 76°F liquid water lands the dough on 75°F, because melting ice absorbs 80 calories per gram.
- Required Water Temp
- 46°F (7.8°C)To hit 75°F DDT in 80°F room
- 350g Batch Ice Split
- 56g Ice / 294g WBased on 76°F tap water & 80 cal/g latent heat
- Mixer Friction Factor
- +14°FStand Mixer Knead 8-Min
- Target Final Dough Temp
- 75°F (23.9°C)Locks fermentation clock & protease rate
4-Factor DDT Table: 80°F Room, 75°F Target, Stand Mixer Knead 8-Min (75°F DDT)
The 14°F friction allowance for stand mixer knead 8-min (75°f ddt) is already inside every target water temperature on this table.
| Recipe Water | Target Water Temp | Ice to Add | Water to Add (@ 76°F) | Dough Temp Achieved |
|---|---|---|---|---|
| 350g water (80°F / +14°F) [Baseline] | 46°F (7.8°C) | 56g crushed ice | 294g tap water (@ 76°F) | 75°F (23.9°C) final dough |
| 400g water (80°F / +14°F) Down 50g | 46°F (7.8°C) | 64g crushed ice | 336g tap water (@ 76°F) | 75°F (23.9°C) final dough |
| 300g water (80°F / +14°F) Up 50g | 46°F (7.8°C) | 48g crushed ice | 252g tap water (@ 76°F) | 75°F (23.9°C) final dough |
| 500g water (80°F / +14°F) Down 100g | 46°F (7.8°C) | 80g crushed ice | 420g tap water (@ 76°F) | 75°F (23.9°C) final dough |
| 250g water (80°F / +14°F) Up 150g | 46°F (7.8°C) | 40g crushed ice | 210g tap water (@ 76°F) | 75°F (23.9°C) final dough |
Interactive Desired Dough Temp (DDT) & Ice Solver Calculator
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Baking Sourdough in a Hot 80°F Room: Why You Need 46°F Water (56g Ice)
Ice must be finely crushed. A 56g charge of coarse ice in a 26.7°C (80°F) kitchen melts unevenly through the mix, and the last shards can shock the wild yeast even though the bulk of the dough ends up at the correct 75°F.
The recipe's own water temperature is not the mix water temperature. If your recipe specifies water at 90°F because it was written for a 68°F kitchen, that number has to be re-solved for this 80°F (26.7°C) room and for the +14°F that stand mixer knead 8-min (75°f ddt) generates.
Thermal Control Protocol for Stand Mixer Knead 8-Min (75°F DDT) in a 80°F Room
- Probe Ingredients (80°F / 26.7 Celsius): Verify ambient room (80°F), flour, and starter temperatures with an instant-read probe thermometer before running Stand Mixer Knead 8-Min (75°F DDT).
- Weigh 56g Ice + 294g Tap Water: For 350g total water, combine 56g finely crushed ice with 294g (@ 76°F) tap water.
- Verify Final 75°F Dough Temp: Probe the dough center immediately after stand mixer knead 8-min (+14°F friction); it should read 75°F ± 1°F.
- Record the Reading: Write the actual temperature on your recipe card — in a 80°F (26.7 Celsius) room the next bake will need the same correction, not a fresh guess.
Frequently Asked Questions for This Desired Dough Temp (DDT) & Ice Solver Spec
Why is my crumb gummy even though the dough looked the right temperature?
A correct 75°F dough can still bake badly if the core never reached 208°F. Check the internal temperature with a probe rather than trusting the oven dial, and remember to cool the loaf for two hours before slicing.
Does humidity in a 80°F (26.7°C) kitchen change the water temperature?
Marginally. On a humid morning the dough surface loses less moisture and cools a little less, so half a degree less cold water is usually right. Treat it as a refinement, not a correction.
Should I probe the flour and levain separately?
Yes. The equation counts the flour and levain as 80°F each, and in a 80°F (26.7 Celsius) kitchen a levain straight from the refrigerator can be 10°F cooler, which alone will miss the 75°F target.