Summer Sourdough Crushed Ice & Water Temp Chart for a Hot 78 Degree (78°F / 26°C) Kitchen — Spiral Mixer (76°F Artisan DDT)
4-factor Desired Dough Temperature (DDT) and 80 cal/g latent heat crushed-ice calculation for hitting 76°F dough in a hot 78°F room.
Heat flows in two directions in a 78°F (25.6 Celsius) kitchen: heat flows from the 78°F flour and levain into the dough, and spiral mixer (76°f artisan ddt) adds +18°F of its own. To land the finished dough on 76°F, the 309g of liquid water must enter at 52°F (11.1°C). Cooling from 74°F tap water down to 52°F means melting 41g of ice into the 350g batch and leaving 309g of liquid water; each gram of ice absorbs 80 cal on melting alone.
- Required Water Temp
- 52°F (11.1°C)To hit 76°F DDT in 78°F room
- 350g Batch Ice Split
- 41g Ice / 309g WBased on 74°F tap water & 80 cal/g latent heat
- Mixer Friction Factor
- +18°FSpiral Mixer
- Target Final Dough Temp
- 76°F (24.4°C)Locks fermentation clock & protease rate
DDT Reference for 78°F Kitchens — Spiral Mixer (76°F Artisan DDT) Water & Ice Split
The 18°F friction allowance for spiral mixer (76°f artisan ddt) is already inside every target water temperature on this table.
| Recipe Water | Target Water Temp | Ice to Add | Water to Add (@ 74°F) | Dough Temp Achieved |
|---|---|---|---|---|
| Line 350g [Anchor] | required 52°F (11.1°C) | weigh 41g ice | measure 309g liquid | expect 76°F dough |
| Line 300g Quarter Batch | required 52°F (11.1°C) | weigh 35g ice | measure 265g liquid | expect 76°F dough |
| Line 400g Three-Quarter Batch | required 52°F (11.1°C) | weigh 47g ice | measure 353g liquid | expect 76°F dough |
| Line 250g Half Batch | required 52°F (11.1°C) | weigh 30g ice | measure 220g liquid | expect 76°F dough |
| Line 500g Double Batch | required 52°F (11.1°C) | weigh 59g ice | measure 441g liquid | expect 76°F dough |
Dynamic Stoichiometric Workbench (52°F (11.1°C))
Test custom loaf weights or alternative fermentation schedules directly against the 41g Ice / 309g W benchmark above.
Baking Sourdough in a Hot 78°F Room: Why You Need 52°F Water (41g 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 25.6°C (78°F) kitchen the combined correction to 76°F is what produces the 52°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 (76°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 (76°F Artisan DDT) in a 78°F Room
- Weigh the Full Water Load: For a 350g batch you need 309g of liquid water plus 41g of crushed ice. Set the scale up before you touch the flour.
- Chill the Water: Add the 41g of ice to the 74°F tap water and wait until the melt is complete so the temperature is stable when the flour arrives.
- Mix in Spiral Mixer (76°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 76°F: Probe the finished dough immediately. In a 78 degrees (25.6°C) kitchen the reading should land on 76°F ± 1°F.
Key Baker's Math Questions (Required Water Temp: 52°F (11.1°C))
How accurate is the 52°F figure in practice?
Within about 1°F, provided the four inputs really are 78°F room, 78°F flour, 78°F levain and +18°F friction. Probe the finished dough to confirm and adjust your next bake.
What if my kitchen is warmer than 78°F 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 52°F figure can drop below freezing, at which point the ice route becomes unavoidable.
Does humidity in a 78 deg F (25.6°C) kitchen change the water temperature?
Marginally. On a humid morning the dough surface loses less moisture and cools a little less, so half a degree less cold water is usually right. Treat it as a refinement, not a correction.