3,360. What to Do With Partially Unclean Meduma

Terumos 14:12

If a seah of ritually clean terumah falls into less than 100 seah of ritually unclean secular produce, the resulting mixture is sold to a kohein, less the value of the terumah. The kohein should eat this meduma mixture as roasted grain, or he should turn it into dough using fruit juice that won’t render it susceptible to ritual impurity. In this way, the ritually unclean secular produce won’t impurify the ritually clean terumah. He could also make the meduma into doughs that are smaller than the volume of an egg because ritually unclean food doesn’t impurify other food unless it’s the volume of an egg. He may also divide the meduma into portions that are smaller than the volume of an egg and put each in a separate dough as this will not impurify the terumah.

Terumos 14:13

If a seah of ritually unclean terumah falls into 100 seah of ritually clean secular produce, or if a seah of ritually clean terumah falls into 100 seah of ritually unclean secular produce, it is removed and the terumah is nullified because the mixture is 101 times the volume of the terumah. The seah that was removed is eaten as roasted grain, made into dough with fruit juice, or made into dough smaller than the volume of an egg (as in the previous halacha) because the seah that was removed is not necessarily the same as the seah that fell in.