Meeting for a consultation at a restaurant or coffee shop sounds great, it's a way to chat face-to-face. Order something to drink - a cup of tea or coffee. Your potential clients can take their samples home. If you need to watch them eat cake, there are other places to meet, such as a community center or town hall. Sorry, but as a former bakery/cafe owner I find it unprofessional and rude to eat the samples while taking up seats in a business that sells food.