Shalom dear Rabbi,
Question: Can we open canned food on Yom Tov, for the purpose of making food for Yom Tov?
The halachos of opening cans etc. on Yom Tov are the sme as for Shabbos, even though it is for food preparation. Open the can in a way that ruins it, or only half way, and then empty it’s contents and discard.
Have a good Yom Tov
Igros Moshe O:CH 1-122.