One-Note Cook/Playing With

Basic Trope: A character can only make one kind of food, if they try anything else they are a lethal chef

Straight: Bob can only make hard boiled eggs
Exaggerated: Bob cannot even make soft boiled eggs! Any attempts to diversify the menu end up with him setting the stove on fire.
Downplayed: Bob can only make dishes that involve eggs.
Justified: Bob is a lazy cook who never bothered to learn more than one dish.
- Bob doesn't care about being a good cook, but he does love boiled eggs.
Inverted: Bob can cook nearly everything under the sun EXCEPT hard boiled eggs.
Subverted: It's Bob's turn to make breakfast, and everyone expects he'll make boiled eggs, they wake up and see he has made some rather tasty looking pancakes.
Double Subverted: The pancakes only look tasty! They really taste horrible!
Parodied: Whenever Bob attempts to diversify his cooking, things end up blowing up, somebody get poisoned or worse...the food causes a zombie apocalypse!
Zig Zagged: Sometimes, Bob can make other dishes perfectly. Sometimes, it turns out so horribly that he had to resort to hard-boiled eggs.
Averted: Bob is a decent cook who can cook several dishes.
- Bob is an awful cook and can't even make one thing right.
Enforced: ???
Lampshaded: ???
Invoked: ???
Exploited: ???
Defied: Bob learns to cook something else.
Discussed: "Bob, I think you should learn to cook something else. I'm getting bored of these hard-boiled eggs."
Conversed: ???