Has one seen a module like this?

Just an idea, maby it helps you:
Categories your food node-types with terms, let the orderer choose with
hierarchial select and send an yourself order email via workflow?

http://drupal.org/project/hierarchical_select

Have you looked into Ubercart?

http://www.ubercart.org/forum/restaurants

you're not likely to find so specific a module-- drupal is much more of a toolbox than it is a final product, though there's a good deal of generic out-of-box functionality as well. You could probably build this with drupal no problem though-- take a look at the cck, views, webform, ubercart, and ecommerce modules.

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