Who is the kitchen god in Greek mythology?

You mean the chef.

Vesta Hestia

Hestia, known as the Kitchen God in Latin, is the oldest and most sacred goddess on Mount Olympus. Being in charge of the stove is a symbol of the family and the patron saint of the miller and baker. Her stories are few, but they are widely admired. Ancient Rome had her public sacrifices. The sacred fire in the temple will never go out. Her six priests, Vestal, must serve continuously for 30 years from childhood, and lose their virginity during this period, and will be punished by being buried alive. However, such things rarely happen. Hestia's prestige is evident. Vestal also means nun, nun and virgin, and it is also an adjective, virgin; Chastity. Shakespeare called Elizabeth I "the beautiful goddess conquered by the West" in A Midsummer Night's Dream.