Add a consumable to my mod

I need help, a potion is used to restore life, but I don’t have a clue.

Any luck with your potion? Your question is kind of vague. Do you already have a working mod and just want to know how to make a potion? I would look at the medicine brew and copy that asset. It is already a healing potion but you could change the stats and icon to look like what you want.