Must be refrigerated, in-store purchase only
 

 
Instructions (prepare one day in advance):  
 
 Ingredients: 15 g natural active sourdough starter + 75 ml warm water at 40 °C + 75 g T65 flour
 
 
 
Mix 15 g natural active sourdough starter with 75 ml warm water (40 °C) in a bowl, stir until fully dissolved.
 
 
Add 75 g T65 flour and stir until no dry flour remains.
 
 
Cover with plastic wrap and let sit at room temperature for 10–12 hours (depending on temperature and humidity).
 
 
Once fermentation is complete, it is ready to use.
 
 
After fermentation, the starter will be about 1.2 times its original volume. 15 g of natural sourdough starter will yield approximately 150 g of starter.