Summer Sourdough Crushed Ice & Water Temp Chart for a Hot 90 Degree (90°F / 32°C) Kitchen — Spiral Mixer (74°F Artisan DDT)
4-factor Desired Dough Temperature (DDT) and 80 cal/g latent heat crushed-ice calculation for hitting 74°F dough in a hot 90°F room.
A 90 degrees (32.2°C) kitchen demands careful water temperature discipline. With spiral mixer (74°f artisan ddt) generating +18°F and every ingredient starting at 90 degrees, the 4-factor DDT equation resolves to 8°F (-13.3°C) for the mix water if you want a 74°F (23.3°C) final dough. Substituting 129g of the 350g with crushed ice and keeping 221g of 78°F liquid water lands the dough on 74°F, because melting ice absorbs 80 calories per gram.
- Required Water Temp
- 8°F (-13.3°C)To hit 74°F DDT in 90°F room
- 350g Batch Ice Split
- 129g Ice / 221g WBased on 78°F tap water & 80 cal/g latent heat
- Mixer Friction Factor
- +18°FSpiral Mixer
- Target Final Dough Temp
- 74°F (23.3°C)Locks fermentation clock & protease rate
Batch-Scaled Ice & Water Chart for a 90°F Kitchen (Spiral Mixer (74°F Artisan DDT))
Read the ice column as a direct instruction: weigh that much crushed ice and make up the balance with 78°F tap water.
| Total Water | Calculated Temp | Ice Quantity | Tap Water Quantity | Dough Temp Target |
|---|---|---|---|---|
| Batch 350g [Primary] | target 8°F / -13.3°C | ice 129g | liquid 221g | lands on 74°F |
| Batch 400g Small Mix | target 8°F / -13.3°C | ice 147g | liquid 253g | lands on 74°F |
| Batch 300g Standard Mix | target 8°F / -13.3°C | ice 111g | liquid 189g | lands on 74°F |
| Batch 500g Oversized Mix | target 8°F / -13.3°C | ice 184g | liquid 316g | lands on 74°F |
| Batch 250g Double Mix | target 8°F / -13.3°C | ice 92g | liquid 158g | lands on 74°F |
Dynamic Stoichiometric Workbench (8°F (-13.3°C))
Test custom loaf weights or alternative fermentation schedules directly against the 129g Ice / 221g W benchmark above.
Baking Sourdough in a Hot 90°F Room: Why You Need 8°F Water (129g Ice)
At 90°F (32.2°C) with spiral mixer (74°f artisan ddt), the required mix water of 8°F (-13.3°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 74°F dough, and that thermal management must come from ice rather than from the faucet.
Water temperature and flour temperature trade off. A 2°F cooler mix water offsets a 2°F warmer flour, but only if the correction is applied before the two meet — once the flour is wet, the system is already committed.
Thermal Control Protocol for Spiral Mixer (74°F Artisan DDT) in a 90°F Room
- Weigh the Full Water Load: For a 350g batch you need 221g of liquid water plus 129g of crushed ice. Set the scale up before you touch the flour.
- Chill the Water: Add the 129g of ice to the 78°F tap water and wait until the melt is complete so the temperature is stable when the flour arrives.
- Mix in Spiral Mixer (74°F Artisan DDT): Combine flour and water, then run the mixer for the full recommended time so the +18°F of mechanical heat is actually generated rather than assumed.
- Confirm 74°F: Probe the finished dough immediately. In a 90 deg F (32.2°C) kitchen the reading should land on 74°F ± 1°F.
Key Baker's Math Questions (Required Water Temp: 8°F (-13.3°C))
What if my kitchen is warmer than 90 degrees on the day I bake?
Recalculate rather than adjusting by feel. Every extra degree of room temperature demands roughly one degree less from the mix water, and in a warm room the 8°F figure can drop below freezing, at which point the ice route becomes unavoidable.
Will the dough temperature change if I scale the recipe?
No. The 4-factor equation is a temperature balance, not a mass balance, so doubling the flour and water keeps the same 8°F target — but you must double the ice too, from 129g to 258g.
Does the type of mixer actually change the water temperature?
Yes, and that is exactly what the friction factor models. Spiral Mixer (74°F Artisan DDT) contributes +18°F, so the same 32.2°C (90°F) kitchen needs a 8°F mix water for this machine and a different one for a hand-mixed dough.