I have not seen them in deli section but you should call store to ask. Also sometimes you may find some in freezer but i haven't looked for them there. Finally..you probably should look for a good Jewish deli for them if you want authentic knishes.
I know they have potatoes but I'm not sure what knishes actually means.
Yes they do carry Potato knishes
Sorry can't help with that, not an employee of Publix.
Thanks! Your answer is awaiting moderation.