Too many cooks means too many people involved will spoil the work. Too many cooks, as they say.
The full saying finishes with spoil the broth, and the short form is used far more. It is said about committees more often than about kitchens.
1phrasetoo many cooksToo many people involved will spoil the work.
“Three people rewrote the letter, which is too many cooks.”
too many cooks is a saying.
Practised in Idioms