Siman 503 – Do not prepare on Yom Tov for after Yom Tov
It is ossur to cook or do any tircha (e.g. to wash dishes or bring wine) on Yom Tov for the morrow. This is true even if the morrow is Shabbos or another Yom Tov. (ShA 1 – MB 1) MAKE 49 INTO 51 !””l!!!!!!!! !
If you are cooking for a Yom Tov meal, you are allowed to fill the pot with more than you need. Putting the pot on the fire is the same tircha whether alot or a little in the pot. You can even have in mind that the extra food will be for after Yom Tov, just refrain from verbally expressing this. If you did, the food does not become ossur. (ShA 1 – MB 5, 6)
It is forbidden to cook during bain hashmashos after the first day Yom Tov for the second day Yom Tov. (BeH “b’yom tov”)
You may not begin to cook on Yom Tov if you figure that there will be no time to enjoy it before shkia. (BeH “b’yom tov”)
If the pot is already on the fire you are allowed to add more meat or fish than you need. The extra volume enhances the flavor of the pieces that you will be eating on Yom Tov. But to add any extra ingredients (e.g. kreplach) that do not enhance the Yom Tov food is a forbidden tircha. (ShA 1 – MB 5)
Similarly, when roasting, you can skewer more pieces than you want for Yom Tov as long as you have not yet put the skewer onto the fire. Once the skewer is on the fire you may not add pieces that are not food for Yom Tov. (MB 5)
After the Yom Tov seuda, you aren’t allowed to cook for after Yom Tov by deceitfully saying “I’ll eat some now” – even if you will eat some now. (ShA 1 – MB 12)
Before the Yom Tov seuda, the minhag is to permit cooking for after Yom Tov as long as you taste some now (especially if it is a different recipe). Since many poskim are machmir on this, you will get a beracha if you follow them. (MB 7)
If a pot of water is already on the fire you aren’t allowed to add more water to be hot for after Yom Tov. If you are concerned that the pot will crack with such a small amount of water, you may add more. (ShA 2 – MB 16)
