How often did he see his mother prepare leavened bread by taking a piece of fermented dough saved from a previous baking and using it as a leavening agent?
Seberapa sering ia melihat ibunya menyiapkan roti beragi dengan mengambil sedikit adonan beragi sisa proses pembuatan roti sebelumnya dan menggunakannya untuk mengkhamirkan adonan baru?