Summer Sourdough Crushed Ice & Water Temp Chart for a Hot 82 Degree (82°F / 28°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 82°F room.
Your mix water in a 27.8°C (82°F) room needs to sit at 32°F (0°C) to finish at 74°F, provided the flour, levain and room are all 82°F and spiral mixer (74°f artisan ddt) contributes +18°F of mechanical heat. The arithmetic is 4 × 74°F − (82 + 82 + 82 + 18) = 32°F. Since the required 32°F sits below the 78°F coming from your tap, swap 85g of the 350g water for finely crushed ice — the 80 cal/g phase change does the cooling — and keep 265g of tap water alongside it.
- Required Water Temp
- 32°F (0°C)To hit 74°F DDT in 82°F room
- 350g Batch Ice Split
- 85g Ice / 265g 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
Desired Dough Temperature Grid at 82°F (27.8°C) Using 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 |
|---|---|---|---|---|
| Line 250g [Baseline] | required 32°F (0°C) | weigh 61g ice | measure 189g liquid | expect 74°F dough |
| Line 400g Down 50g | required 32°F (0°C) | weigh 97g ice | measure 303g liquid | expect 74°F dough |
| Line 350g Up 50g | required 32°F (0°C) | weigh 85g ice | measure 265g liquid | expect 74°F dough |
| Line 300g Down 100g | required 32°F (0°C) | weigh 73g ice | measure 227g liquid | expect 74°F dough |
| Line 500g Up 150g | required 32°F (0°C) | weigh 121g ice | measure 379g liquid | expect 74°F dough |
Live Parameter Solver for Summer Sourdough Crushed Ice & Water Temp
Dial in custom baker's percentages and export your adjusted 32°F (0°C) formula for bake day.
Baking Sourdough in a Hot 82°F Room: Why You Need 32°F Water (85g 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.
Ice substitution scales with batch size, not with flour. The 85g of crushed ice quoted for 350g of water becomes proportionally larger for a bigger batch, because the same temperature deficit has to be removed from more mass.
Thermal Control Protocol for Spiral Mixer (74°F Artisan DDT) in a 82°F Room
- Measure the Room First: Confirm the kitchen really is 27.8°C (82°F) with a thermometer on the counter, not on the window, because radiant sun can read several degrees warmer than the working surface.
- Temper Flour and Levain: Bring both to 82°F before mixing. Cold flour is the most common reason a 74°F target is missed in a 27.8°C (82°F) kitchen.
- Combine 85g Crushed Ice with 265g Tap Water: Mix the ice into the 78°F water first and let it chill completely before it touches the flour.
- Mix and Check: After spiral mixer, probe the dough — it should read 74°F (±1°F) given the +18°F friction allowance.
Cereal Chemistry & Bench Execution FAQs
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 27.8°C (82°F) kitchen needs a 32°F mix water for this machine and a different one for a hand-mixed dough.
How much colder is the water than the room in this 82°F (27.8°C) kitchen?
50°F below the room temperature of 82°F. That gap is the entire thermal load that 18°F of spiral mixer (74°f artisan ddt) friction and 82°F ingredients impose on the mix water.
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 Celsius) kitchen a levain straight from the refrigerator can be 10°F cooler, which alone will miss the 74°F target.