"Chef" is the title you're looking for then. It's not a title that's thrown around lightly in the kitchen.

[Particularly a head chef like him.]

Hm...not even eggs and milk?

[Separate meals completely deprived of animal products most likely. Protein would need to be derived from plant sources such as beans and nuts. If no milk, then making any kind of yogurt was out.]

I'm assuming I'll need to prepare your meals entirely separately to prevent cross-contamination.