Adapted from a shiur by Rav Yosef Greenwald on Parshas Tzav
(כל אשר יגע בבשרו יקדש (ויקרא ו:כ
Based on this pasuk, a piece of a korban chatas that touches a korban shelamim causes the shelamim to absorb the chatas taste, and it is all treated like a chatas:
- Eaten only by male Kohanim in the Beis HaMikdash
- Eaten for one day only
Chazal derive from here that hot forbidden food absorbed in a mixture forbids the whole mixture (if not batel b’shishim). Is this rule, known as ta’am k’ikar, deoraisa?
- Many rishonim and Shulchan Aruch (Y.D. 98) – Yes
- Rashi (Chullin 97b) – No, it is derabanan except for Kodashim. Mideoraisa, it is batel b’rov (in a majority).
- Rashi (and Ra’avad) – If ta’am kikar were deoraisa, then if less than a
kezayis of treif meat dissolves into soup and is not batel b’shishim, one is chayav for
eating a kezayis of soup (without kezayis of treif).
- Reason: The whole soup is assur.
- Most rishonim – Treif taste is not batel because it has chashivus. Therefore, one is chayav only for eating a kezayis of treif.
There are certain chumras unique to chametz on Pesach beyond the regular rules.
- Chametz is assur b’mashehu (forbidden in any amount, even 1:60) if it is mixed on Pesach with non-chametz.
- Yavesh B’yavesh (mixture of two dry items) – Even if it got mixed before Pesach, it is assur b’mashehu.
- Two pots – Usually do not transfer taste, but on Pesach we’re machmir. Therefore, we must kasher the stove grates on which we put pots.
taam lfgam (the taste detracts from the ikar)
normally permits food cooked in a kli more than 24 hours after
use for treif. But on Pesach it’s a machlokes:
- Rema (O.C. 447) — Assur.
- Shulchan Aruch – Mutar.
- If someone cooked a Pesach meal in a clean (not ben yomo) chametz pot on Pesach, Sefardim permit the food, and Ashkenazim forbid it.