Cartoonish bad at cooking is such an infuriating trait for me. Most people seems to just find it comedic, but it's a pet peeve for me.
Real people that are bad at cooking are because they don't have much experience. They don't know how a taste will be affected by how much heat you cook things, or how to do certain steps properly. Stuff that can be fixed with practice and experience.
Anime bad at cooking is just straight up "I wanna strangle you" stupidity. Like, there's no way you're not doing that on purpose. It's not stuff that can be fixed with "practice" until you have bandages in your hand. It's like telling someone instructions to press the red button, and they poke their own eye out. Like come on dude. The problem isn't cooking at that point.