Sunday, 30 May 2010 | AP | Kashrut/Food
17 Sivan 5770 – May 30, 2010. – Perashat Shelah-Lekha
Shabu’a Tob uMazal Tob veEliyahu haNabi Zakhur leTob!
Jm’a Mbarka Ms’uda!
Cooking a Parve Dish in a Meat Pot in Order to Eat it With Milk
When a food is cooked in a pot, it transfers its taste to the pot. When the pot is next used, after being cleaned, the pot transfers the taste of the first food to the second food. This secondary infusion of taste is called “noten ta’am bar noten ta’am” (“giver of taste son of giver of taste”) and abbreviated to nat-bar-nat. This infusion of taste is less powerful than the first.
The Posqim are divided as to whether the Talmud permits such foods only bedi’abad (after the fact) or whether one can lekhatehila (in the first place) cook a parve dish in a meat pot and eat it with milk foods.
The Bedeq haBayit (glosses authored by Maran haBet Yosef) seems to indicate that lekhatehila one may cook parve food in a meat pot and eat it with dairy (as well as the reverse) . The Rama rules that one may eat such food only bedi’abad. This seems to be the position of the Bet Yosef as well.
Ribi Shalom Messas zt”l was of the opinion that the minhag in Morocco is to be strict and follow the ruling of the Rama in this matter since this is the opinion of the Bet Yosef . However, some posqim challenge this ruling and suggest that even according to Bet Yosef it is permitted to cook parve foods in a meat pot in order to eat them with milk .
 Yoré De’a 95:1. There are two types of nat-bar-nat: the permitted type (nat-bar-nat dehetera) and the forbidden type (nat-bar-nat de’isura). The forbidden type occurs when an inherently forbidden food (such as pork) is cooked in a pot. This pot becomes non-kasher and any food subsequently cooked in it also becomes non-kasher, even though the transfer of non-kasher taste is only secondary (that is, the taste went from the first food to the pot, and then from the pot to the second food). The permitted type of nat-bar-nat occurs when the initial food cooked in the pot is kasher (e.g. kasher meat). If a parve food, such as fish, is later cooked in this meat pot, it undergoes a secondary infusion of meat taste. The Talmud rules that such fish may be eaten with dairy.
 Ribi Shalom Messas zt”l (Shemesh uMagen 1:8 and 2:42; see alsoMizrah Shemesh 95). The minhag is always to follow the Bet Yosef when it contradicts the Bedeq haBayit.
 Shema’ Shelomo, e”H Ribi Shelomo ‘Amar s”t, Yabi’a Omer. Nevertheless, all agree if the pot has not been used for 24 hours, one can cook lekhatehila a parve dish to have with milk.