Sourdough Water Temperature Chart for a 72 Degree (72°F / 22°C) Kitchen — Stand Mixer Low Speed (75°F DDT)
4-factor Desired Dough Temperature (DDT) and mixer friction offset (+8°F) for hitting 75°F dough in a 72°F room.
In this 72°F (22.2°C) room, stand mixer low speed (75°f ddt) adds +8°F of mechanical friction to a dough whose flour and levain are also 72°F. The 4-factor Desired Dough Temperature equation therefore calls for mix water at 76°F (24.4°F) to deliver a 75°F (23.9°C) dough. No phase change is needed in this temperature band — mix 350g of water at 76°F and the arithmetic balances.
- Required Water Temp
- 76°F (24.4°C)To hit 75°F DDT in 72°F room
- 350g Batch Ice Split
- 0g Ice / 350g WaterBased on 68°F tap water & 80 cal/g latent heat
- Mixer Friction Factor
- +8°FStand Mixer Low Speed
- Target Final Dough Temp
- 75°F (23.9°C)Locks fermentation clock & protease rate
DDT Reference for 72°F Kitchens — Stand Mixer Low Speed (75°F DDT) Water & Ice Split
Sums each row to the batch water weight so the split between ice and liquid always reconciles.
| Water Load | Theoretical Temp | Crushed Ice | Tap Water | Final Dough Temp |
|---|---|---|---|---|
| 400g water (72°F / +8°F) [Exact Target] | 76°F (24.4°C) | 0g (no ice needed) | 400g tap water (@ 68°F) | 75°F (23.9°C) final dough |
| 350g water (72°F / +8°F) Alt Line A | 76°F (24.4°C) | 0g (no ice needed) | 350g tap water (@ 68°F) | 75°F (23.9°C) final dough |
| 250g water (72°F / +8°F) Alt Line B | 76°F (24.4°C) | 0g (no ice needed) | 250g tap water (@ 68°F) | 75°F (23.9°C) final dough |
| 500g water (72°F / +8°F) Alt Line C | 76°F (24.4°C) | 0g (no ice needed) | 500g tap water (@ 68°F) | 75°F (23.9°C) final dough |
| 300g water (72°F / +8°F) Alt Line D | 76°F (24.4°C) | 0g (no ice needed) | 300g tap water (@ 68°F) | 75°F (23.9°C) final dough |
Custom Batch Recalculation Engine
Fine-tune starter hydration between 50% stiff and 125% liquid while keeping your desired dough temp (ddt) & ice solver ratios locked.
Offsetting +8°F Mixer Friction in a 72°F (22°C) Kitchen: Target 76°F Water
Latent heat of fusion is why the cooling arithmetic is not linear. Replacing 0g of the 350g of water with crushed ice removes not merely 0g × 1 cal/g of sensible heat, but 0g × 80 cal/g of phase-change heat, which is what allows a 22.2°C (22.2°C) room to be cooled into a 75°F dough.
Humidity shifts the effective room temperature slightly. A dry 72°F (22.2°C) day pulls moisture out of the dough surface and cools it a little, so a humid morning may want half a degree less cold water than the table suggests.
Thermal Control Protocol for Stand Mixer Low Speed (75°F DDT) in a 72°F Room
- Weigh the Full Water Load: For a 350g batch you need 350g of liquid water and no ice. Set the scale up before you touch the flour.
- Chill the Water: Warm the 68°F tap water down to 76°F so the temperature is stable when the flour arrives.
- Mix in Stand Mixer Low Speed (75°F DDT): Combine flour and water, then run the mixer for the full recommended time so the +8°F of mechanical heat is actually generated rather than assumed.
- Confirm 75°F: Probe the finished dough immediately. In a 72 deg F (22.2°C) kitchen the reading should land on 75°F ± 1°F.
Technical Q&A: Sourdough Water Temperature Chart for a 72 Degre
What water temperature should I use for sourdough in a 72°F kitchen with Stand Mixer Low Speed (75°F DDT)?
Using Stand Mixer Low Speed (75°F DDT) (+8°F friction) and targeting a 75°F final dough temperature, your theoretical water temperature is 76°F (24.4°C).
What if my kitchen is warmer than 72 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 76°F figure can drop below freezing, at which point the ice route becomes unavoidable.
How much colder is the water than the room in this 72°F (22.2°C) kitchen?
-4°F below the room temperature of 72°F. That gap is the entire thermal load that 8°F of stand mixer low speed (75°f ddt) friction and 72°F ingredients impose on the mix water.