3,366. One Barrel Mixed Up With 100 or 150 Others

Terumos 15:3

If a sealed barrel of terumah wine gets mixed with 100 other barrels, one of which is then opened, he must remove one hundredth of it, after which one may drink the remainder of what’s in the barrel. The rest of the barrels, however, are prohibited until they are opened. Every time one of them is opened, he must remove the percentage that would render the mixture meduma (1/101), after which the remaining hundred portions are permitted.

If a barrel of terumah wine got mixed up with 150 others barrels, 100 of which were then opened, one removes the percentage of wine that renders the mixture meduma – i.e., one barrel – and one may drink the rest of the opened wine. The fifty sealed barrels remain prohibited, and we don’t assume that the barrel that was terumah was among the majority that got opened. Even if there are thousands of barrels, they are all meduma. Therefore, any time one of these barrels is opened, he must remove one hundredth of it, after which the rest of it may be drunk. Every other barrel, however, remains meduma until undergoing this procedure.

Terumos 15:4

We discussed in Hilchos Maachalos Assuros that leavening and spices render mixtures prohibited regardless of how little is mixed in. Therefore, if someone blended a terumah apple and put it in a dough, causing it to leaven, the whole dough is meduma and prohibited to non-kohanim.