No problem, thank you for your feedback!
That's right, you'll be able to cook meals for yourself in the near future.
Currently, if a girl eats a snack with the appetite stimulant ingredient, her appetite becomes 'ravenous' for the rest of the day. This provides a bonus to your feeding persuasion chances, amongst other effects.
Fullness capacity is a great idea for a new status effect though. I may add this to an existing ingredient or create a new ingredient with this effect.
The Wild Truffle ingredient also adds a very powerful status effect to your food!
I'll add a new ingredient item soon to the Dizzy's Employee shop that adds lots of calories plus the Dizzy's addiction status effect to your culinary creations.
I also really like the idea of creating custom shakes, I'll add that to my to-do list.