Summer Sourdough Crushed Ice & Water Temp Chart for a Hot 82 Degree (82°F / 28°C) Kitchen — Stand Mixer Knead 8-Min (78°F DDT)
4-factor Desired Dough Temperature (DDT) and 80 cal/g latent heat crushed-ice calculation for hitting 78°F dough in a hot 82°F room.
Target a 78°F (25.6°C) dough, account for a 82 deg F (27.8°C) room plus 82 deg F flour and levain, then add the +14°F of heat that stand mixer knead 8-min (78°f ddt) generates: 4 × 78°F − (82 + 82 + 82 + 14) = 52°F of mix water. Blending 48g of crushed ice with 302g of 78°F water is how you reach 52°F in this kitchen; the phase change alone strips 80 cal per gram before the water even warms.
- Required Water Temp
- 52°F (11.1°C)To hit 78°F DDT in 82°F room
- 350g Batch Ice Split
- 48g Ice / 302g WBased on 78°F tap water & 80 cal/g latent heat
- Mixer Friction Factor
- +14°FStand Mixer Knead 8-Min
- Target Final Dough Temp
- 78°F (25.6°C)Locks fermentation clock & protease rate
Crushed Ice & Tap Water Gram Table for 82°F Kitchen (Stand Mixer Knead 8-Min (78°F DDT))
Sums each row to the batch water weight so the split between ice and liquid always reconciles.
| Water Load | Theoretical Temp | Crushed Ice | Tap Water | Final Dough Temp |
|---|---|---|---|---|
| Line 300g [Anchor] | required 52°F (11.1°C) | weigh 41g ice | measure 259g liquid | expect 78°F dough |
| Line 350g Quarter Batch | required 52°F (11.1°C) | weigh 48g ice | measure 302g liquid | expect 78°F dough |
| Line 500g Three-Quarter Batch | required 52°F (11.1°C) | weigh 68g ice | measure 432g liquid | expect 78°F dough |
| Line 250g Half Batch | required 52°F (11.1°C) | weigh 34g ice | measure 216g liquid | expect 78°F dough |
| Line 400g Double Batch | required 52°F (11.1°C) | weigh 55g ice | measure 345g liquid | expect 78°F dough |
Custom Batch Recalculation Engine
Fine-tune starter hydration between 50% stiff and 125% liquid while keeping your desired dough temp (ddt) & ice solver ratios locked.
Baking Sourdough in a Hot 82°F Room: Why You Need 52°F Water (48g Ice)
At 82 degrees (27.8°C) with stand mixer knead 8-min (78°f ddt), the required mix water of 52°F (11.1°C) may be physically impossible from the tap. That is not an error in the arithmetic — it is a signal that the kitchen is too warm for a 78°F dough, and that thermal management must come from ice rather than from the faucet.
Ice quantity and water quantity are not interchangeable views of the same thing. 48g of crushed ice is the solid portion; the 302g of tap water that accompanies it is what actually hydrates the flour. Both numbers must be weighed.
Thermal Control Protocol for Stand Mixer Knead 8-Min (78°F DDT) in a 82°F Room
- Start the Night Before: In a 82°F (27.8 Celsius) kitchen the flour will sit near room temperature overnight if you store it sealed, so re-probe it in the morning rather than trusting yesterday's reading.
- Prepare the Water Station: Get the 52°F (11.1°C) water ready before you open the flour bag — once the flour is wet the temperature negotiation is over.
- Blend Ice and Water: Stir 48g of crushed ice into 302g of 78°F tap water until the slush is uniform, then pour over the flour.
- Record and Repeat: Note the final probe reading alongside the 82°F (27.8 Celsius) room temperature so the next bake is a copy rather than a calculation.
Technical Q&A: Summer Sourdough Crushed Ice & Water Temp Chart
Should I probe the flour and levain separately?
Yes. The equation counts the flour and levain as 82°F each, and in a 82°F (27.8°C) kitchen a levain straight from the refrigerator can be 10°F cooler, which alone will miss the 78°F target.
Does the type of mixer actually change the water temperature?
Yes, and that is exactly what the friction factor models. Stand Mixer Knead 8-Min (78°F DDT) contributes +14°F, so the same 82°F (27.8°C) kitchen needs a 52°F mix water for this machine and a different one for a hand-mixed dough.
Does the type of mixer actually change the water temperature?
Yes, and that is exactly what the friction factor models. Stand Mixer Knead 8-Min (78°F DDT) contributes +14°F, so the same 82°F (27.8°C) kitchen needs a 52°F mix water for this machine and a different one for a hand-mixed dough.