A new dish doesn't always begin with a perfect recipe. It can start with one ingredient, a technique a memory, problem.
Or simply:
“What if we tried this?”
Then comes testing.
Too salty? , Too expensive?, Too slow to prepare?, Does it look right?, Will people actually order it?
The recipe changes , then changes again.
Eventually, something that started as an experiment becomes part of the menu.
The final dish may look simple.
The process behind it usually wasn't.