Summer Sourdough Crushed Ice & Water Temp Chart for a Hot 78 Degree (78°F / 26°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 78°F room.
If you mix with 74°F tap water in a 25.6°C (78°F) kitchen using spiral mixer (74°f artisan ddt), the dough will land well above 74°F and ferment far too fast. The arithmetic 4 × 74°F − (78 + 78 + 78 + 18) gives the required 44°F (6.7°C) mix temperature instead. Your 74°F tap water is 30°F too warm for a 74°F dough, so 56g of crushed ice replaces that much of the 350g and 294g of tap water completes the mix.
- Required Water Temp
- 44°F (6.7°C)To hit 74°F DDT in 78°F room
- 350g Batch Ice Split
- 56g Ice / 294g WBased on 74°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 78°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 74°F tap water.
| Total Water | Calculated Temp | Ice Quantity | Tap Water Quantity | Dough Temp Target |
|---|---|---|---|---|
| 300g recipe water — [Baseline] | 44°F theoretical | 48g finely crushed | 252g from the tap at 74°F | final 74°F / 23.3°C |
| 350g recipe water — Down 50g | 44°F theoretical | 56g finely crushed | 294g from the tap at 74°F | final 74°F / 23.3°C |
| 500g recipe water — Up 50g | 44°F theoretical | 81g finely crushed | 419g from the tap at 74°F | final 74°F / 23.3°C |
| 250g recipe water — Down 100g | 44°F theoretical | 40g finely crushed | 210g from the tap at 74°F | final 74°F / 23.3°C |
| 400g recipe water — Up 150g | 44°F theoretical | 65g finely crushed | 335g from the tap at 74°F | final 74°F / 23.3°C |
Dynamic Stoichiometric Workbench (44°F (6.7°C))
Test custom loaf weights or alternative fermentation schedules directly against the 56g Ice / 294g W benchmark above.
Baking Sourdough in a Hot 78°F Room: Why You Need 44°F Water (56g Ice)
Friction is the variable bakers forget. Spiral Mixer (74°F Artisan DDT) contributes +18°F, and because that heat is generated inside the dough rather than supplied from the room, it cannot be compensated by simply lowering the water temperature of the flour. It has to be subtracted from the mix water before mixing begins.
Probe the ingredients, not the plan. Room, flour and levain each carry their own temperature in a 78°F (25.6°C) kitchen, and the 44°F (6.7°C) figure above assumes all three are at 78°F. A 3°F error in the flour alone shifts the finished dough by roughly 1°F.
Thermal Control Protocol for Spiral Mixer (74°F Artisan DDT) in a 78°F Room
- Probe Ingredients (78°F / 25.6°C): Verify ambient room (78°F), flour, and starter temperatures with an instant-read probe thermometer before running Spiral Mixer (74°F Artisan DDT).
- Weigh 56g Ice + 294g Tap Water: For 350g total water, combine 56g finely crushed ice with 294g (@ 74°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 78°F (25.6°C) room the next bake will need the same correction, not a fresh guess.
Key Baker's Math Questions (Required Water Temp: 44°F (6.7°C))
How much ice do I add to 350g of bread water in a 78°F room (Spiral Mixer (74°F Artisan DDT))?
Replace 56g of water with finely crushed ice and use 294g of 74°F tap water to hit 74°F DDT.
Can I mix the ice directly into the flour?
Yes, and it is often the better technique. Mixing 56g of crushed ice into the 294g 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.
Do I need crushed ice or is a cold fridge fine?
Crushed ice, always. Chilling the bowl in the refrigerator removes heat far too slowly for a 350g batch; the 80 cal/g latent heat of fusion in 56g of crushed ice does the job in under a minute.