When tithed grapes are used for wine
Question
If I buy grapes or olives from which terumot and ma’aserot were taken, and then use them to make wine or olive oil, do I need to take terumot and ma’aserot again (at the completion of the process, gemar melacha)?
Answer
Rabbi Yehuda HaLevy Amichay
There is no need to take terumot and ma’aserot in this case, since these have already been taken, even if now they are in the form of oil or wine.