Summer Sourdough Crushed Ice & Water Temp Chart for a Hot 86 Degree (86°F / 30°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 86°F room.
In this 86°F (30 Celsius) room, spiral mixer (74°f artisan ddt) adds +18°F of mechanical friction to a dough whose flour and levain are also 86°F. The 4-factor Desired Dough Temperature equation therefore calls for mix water at 20°F (-6.7°F) to deliver a 74°F (23.3°C) dough. There is no faucet setting that reaches 20°F here, so reach for ice: 107g finely crushed plus 243g of 78°F tap water brings the batch to 74°F through 80 cal/g of latent heat.
- Required Water Temp
- 20°F (-6.7°C)To hit 74°F DDT in 86°F room
- 350g Batch Ice Split
- 107g Ice / 243g 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
Water Temperature Solver: 86°F (30°C) Room, Spiral Mixer (74°F Artisan DDT) (+18°F)
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 |
|---|---|---|---|---|
| 350g recipe water — [Baseline] | 20°F theoretical | 107g finely crushed | 243g from the tap at 78°F | final 74°F / 23.3°C |
| 400g recipe water — Down 50g | 20°F theoretical | 122g finely crushed | 278g from the tap at 78°F | final 74°F / 23.3°C |
| 300g recipe water — Up 50g | 20°F theoretical | 92g finely crushed | 208g from the tap at 78°F | final 74°F / 23.3°C |
| 500g recipe water — Down 100g | 20°F theoretical | 153g finely crushed | 347g from the tap at 78°F | final 74°F / 23.3°C |
| 250g recipe water — Up 150g | 20°F theoretical | 76g finely crushed | 174g from the tap at 78°F | final 74°F / 23.3°C |
Live Parameter Solver for Summer Sourdough Crushed Ice & Water Temp
Dial in custom baker's percentages and export your adjusted 20°F (-6.7°C) formula for bake day.
Baking Sourdough in a Hot 86°F Room: Why You Need 20°F Water (107g Ice)
The 4-factor equation is symmetric: a room that is 2°F cooler demands 2°F more from the water, and a mixer with 2°F less friction demands 2°F less. In this 86°F (30 Celsius) kitchen the combined correction to 74°F is what produces the 20°F target, and the same correction scales proportionally with every additional gram of water.
Mixing temperature is not dough temperature. The 18°F allowance for spiral mixer (74°f artisan ddt) assumes the heat is distributed through the mass rather than concentrated in the dough hook's path, so a slow first minute of mixing keeps the correction honest.
Thermal Control Protocol for Spiral Mixer (74°F Artisan DDT) in a 86°F Room
- Probe Ingredients (86°F / 30°C): Verify ambient room (86°F), flour, and starter temperatures with an instant-read probe thermometer before running Spiral Mixer (74°F Artisan DDT).
- Weigh 107g Ice + 243g Tap Water: For 350g total water, combine 107g finely crushed ice with 243g (@ 78°F) faucet water.
- Verify Final 74°F Dough Temp: Probe the dough center immediately after spiral mixer (+18°F friction); it should read 74°F ± 1°F.
- Record the Reading: Write the actual temperature on your recipe card — in a 86°F (30°C) room the next bake will need the same correction, not a fresh guess.
Cereal Chemistry & Bench Execution FAQs
What is the DDT formula for a 30°C kitchen using Spiral Mixer (74°F Artisan DDT)?
Target water temperature = (4 × 74°F) − (30°C room + 30°C flour + 30°C levain + 18°F friction) = 20°F (-6.7°C).
Can I mix the ice directly into the flour?
Yes, and it is often the better technique. Mixing 107g of crushed ice into the 243g of water and flour together chills the mass faster than adding cold water to warm flour, and the 80 cal/g phase change is fully captured.
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 86°F (30°C) kitchen needs a 20°F mix water for this machine and a different one for a hand-mixed dough.