According to Halacha 1, why is there no minimum measure for the prohibition of yayin nesech (wine poured as a libation)?
Halacha 1 states that since the prohibition stems from idol worship, which itself has no minimum measure ('let no trace of the condemned entity cling to your hand'), yayin nesech similarly has no minimum measure — even the tiniest drop incurs lashes.
Question 2
Per Halacha 8, which type of wine is EXEMPT from the Rabbinic decree against ordinary gentile wine?
Halacha 8 explains that the Rabbis only decreed against wine that could serve as a libation — i.e., wine fit for the altar. Boiled wine is unfit for the altar, so a gentile's touch does not render it forbidden at all.
Question 3
According to Halacha 10, from what exact moment does a gentile's grape juice become forbidden?
Halacha 10 rules that the wine is forbidden from the moment the crushed grapes begin to flow — even while still in the winepress and before descending into the cistern below.
Question 4
Halacha 14 forbids placing Jewish wine in barrels previously used by gentiles. What are two of the three valid purification methods listed?
Halacha 14 gives three methods: (a) leaving them to dry for twelve months, (b) pouring boiling water through them three times, or (c) purging with water and ashes — and Halacha 15 adds that fish brine or fish oil also neutralizes the absorbed wine.
Question 5
Under Halacha 25, when a Jewish host brings wine to a guest, what is the ruling — and what changes the ruling?
Halacha 25 rules that wine (and other foods) brought by a host are permitted without any inquiry, since we assume the host eats the same food himself. The exception is when the host has an established reputation for non-observance — then inquiry is required.