Baking high-hydration sourdough in the Indian tropics is an exercise in kinetics. Western sourdough textbooks assume ambient room temperatures of 20 to 22 degrees Celsius. When your kitchen stays at 28 or 30 degrees Celsius, standard fermentation timelines will lead directly to proteolytic enzyme breakdown and soup-like dough.
1. Throttling Starter Inoculation
At 28 degrees Celsius, the standard 20 percent levain inoculation is far too aggressive; the dough over-ferments before gluten matrix development is complete. Throttle the starter inoculation down to 10 or 12 percent.
Use chilled water (around 12 degrees Celsius) during the autolyse phase to bring the initial dough temperature down to 23 degrees Celsius. This buys you precious runway for proper gluten development.
“In warm ambient environments, temperature is an ingredient that must be measured as precisely as flour.”
2. The Four-Stage Coil Fold Regimen
Skip aggressive slap-and-fold techniques on high-hydration doughs (78 percent and above). Instead, perform four gentle coil folds inside a rectangular glass dish at 30-minute intervals.
- Fold 1 & 2: Build vertical tension without tearing the extensible gluten sheets.
- Fold 3 & 4: Preserve developing gas pockets; manipulate only the outer perimeter.
3. Dutch Oven Baking Dynamics
Preheat a heavy cast-iron Dutch oven at 240 degrees Celsius for forty-five minutes. Drop the scored boule in directly onto parchment, add two ice cubes under the paper for instantaneous steam, and seal the lid for twenty minutes. Remove the lid for the final fifteen minutes to caramelize the crust to a deep chestnut brown.