Question: how long does it take to make homemade yeast?
Answer: Place three to four tablespoons of raisins in your jar. ...  Fill the jar ¾ full with water. ...  Place jar at constant room temperature. ...  Stir at least once a day for three to four days. When bubbles form on the top and you smell a wine-like fermentation you have yeast. ...  Place your new yeast in the refrigerator.