I've contacted several prospective customers and have a few positive responses, that there is potential market for my service. I'm not sure if I can learn any m

I've contacted several prospective customers and have a few positive responses, that there is potential market for my service. I'm not sure if I can learn any more from people without actually having a (paying) MVP to work with. I'd imagine that at some point, especially when there are two tiers of users (chefs and customers), that the only real definitive experiment is to create something worth trying out. Obviously at first I can just work with a teaser/concept page and see if enough sign up. Since I'm aiming for a broad market (any food establishment who wants to offer prepared meal services), finding an approach to get a rush of traffic (via PR, bloggers, buzz, etc) seems to make the most sense. Having analytics seems to make sense at that point. I don't think asking theoretical questions to restaurants will get me anything more. I'm imagining that once I reach a point in the size of the list that I would then work on the MVP.