Other problems:
This can make a Hindu person violate their religious practices (as in the poor people will eat cow meat, which is a massively awful thing in their religion)
You may very well be responsible for the death of a person with a serious allergy to contents of either food
You may end up causing some issues for a person with autism or similar neurodivergent status
You may be responsible for the hospitalization or death of a person with dietary restrictions in either dish
You would be actively forcing people who you don’t know to violate their ethical principles for a sick joke, and there is a word for people who do things like this for no gain to themselves and just harm others “for fun” - EVIL! Literally the word is evil
You’re breaking the law as far as I know - at the very least you’re making issues for the poor employees in doing this