I bought an enclosed trailer, turned it into a mobile kitchen with sinks etc.
I then built a pavilion type shelter for my cookers and had it all inspected, got licensed etc. You will have to take the food safety class.
I believe its very hard to get a personal kitchen to pass, and not possible if you have pets.
Meadow Creek TS120 & BBQ26S, Large BGE, Weber WSM 22", Weber Genesis Gold (NaturalGas), Stoker, Guru ProCom4