In the previous shiur, we finished charting the logical flow of the sugya that seeks the reason why grape wine has its own special beracha. Then we went back to the beginning and began studying each segment in depth. We completed the discussion that rejected the reason first proposed: that the juice of the grape, with which we make wine, constitutes a change that improves the product so much that it deserves a unique blessing. We got up to the alternative answer proposed by the amora Mar Zutra. Please review this material. If you have questions you can raise them by email to me or directly at the beginning of this class.
In this shiur, we will learn in depth the alternative answer of Mar Zutra, and the subsequent replacement of it by yet a different answer. The discussion will take us afield to a mishna about a detail in the laws of nedarim (vows), which the amoraim find relevant to the query at hand. All of this material is on the page at Berachot 35b.