How can I market my SaaS focused on fast food businesses?

I just launched a tool to help small restaurants and food stands structure their WhatsApp orders with a digital menu.

It was inspired by a friend who was tired of answering the same topping/cream questions over and over.

The idea: the customer builds their order from a catalog, and it arrives neatly via WhatsApp.

I’d love some advice — how would you market something like this to food businesses that already use WhatsApp but don’t have any digital system yet?

(I’m happy to DM a link if anyone wants to try it out or give feedback.)