And it's made -- it can be a sourdough starter, or what we call a "biga" or any other kind of pre-fermented dough with a little yeast in it, and that starts to develop flavor also.
それはサワー種のパン生地や "biga"と呼ばれるもの あるいは 他のイーストを少し含んだパン生地で これも次第に風味が増します