You would call a professional cook a chef.
Happy Hooligan Has Troubles with the Cook - 1901 was released on: USA: July 1901
happy
Cook their best meal. What they enjoy eating.
because you are jolly
happy chimp
You might call a person who makes burgers a "hamburger cook," "cook," or "grill chef."
Because he is happy
WAITER
A happy lion is one that has had a kill.
To explain the joke "what do you call a happy frog, answer hoppy" you have to understand puns. Hoppy is enough like happy that it can be substituted.
Khoshi