(Some) cats will eat or drink anything. Bonus points if human people are eating it. Ros really likes Sean's chocolate biscuits and my coffee and will eat something spicy, retreat to snuffle and cough, and then come back for more. We try to make her read up on her feline carnivore nature when she's scoffing, say, pizza, but she'll not believe us.
Bear, otoh, has always needed coaxing to eat anything that's not clearly marked as cat fud.