So I think it would just be awesome having them in Skyrim, so that you maybe can get some cooked meal in the daytime, and if you are going to attack someone in the tavern it might happen that the cooks will run out of the kitchen and attack you with their knifes.
And cause there is cooking in Skyrim you could also work in a tavern, starting with bringing some stuff from the market and then after a while cooking yourself. You can also get some special food only there.
The style of old kitchens is great as well, they had mine waggons on rails in there so that they got the coal from the stock to the ovens.
So what do you guys think, wouldn't it be cool having kitchens and cooks in Skyrims taverns?