You start an action and its completion takes time.
To check for when the action has finished is expensive. So you will be given the job of guessing the time for when the Example you provide has been successfully completed.
Implementation-wise I would suggest you need one set of the kitchen items of pots, pans and hotplate, and available the tools for chopping and stuff.
Mixers can be cluttered up with the mixing you did before and might require cleaning with tap water.
Water should be made to boil in the quantity the cooking vessel has. So little for the frying pan (1,5 l max) and up to 4 l with a pot. Game will ask you how much to cook.
You have to know the safe limit for your utensil (if necessary learn from basic kitchen book).
Insane values wont work (“This is way to much water” or “You cannot fill that much water in there to boil”.
Repeated attempts you can let them spill it over the hotplate so they will stop.
What you can do here instead of waiting for the water to boil (for if you keep looking when its done, you might catch a flying cinder in the eye or some other bad thing might happen to discourage you from using up that processing time) install a whistle on the pot. But be careful to take it off fast, for the zombies might also be attracted to this sound :D[/quote]
Like i said, sufficient quantities of pots and kitchen utensils that get filled in the process.
Can be scaled up though, if you oughta cook for 100 NPCs you can still find the canteen with 15 l pots and cook stew for everyone (even from their meat of the other 100 NPCs :D).
Yea we should get those machines who can make 40 liters of clean water per hour from the air moisture. And allow scaling of operation for boiling water.
But we cant stroll to far from the tasks of single handedly handling our survival. If we forget the fire on the stove the place doesnt catch fire but food will be fudge instead of noodles.
Have yet to try charcoal kiln, brick maker and concrete mixer… But they all seem rather recent additions, I guess to support crafting walls and stuff.