cooking with gas
(after thirty minutes of working hard and getting almost nothing done but then suddenly finding a way to do it efficiently) now we're cooking with gas
efficiently performing a task after a long period of inefficient performance or possibly failed attempts at the entire task or certain steps in the process
"(after thirty minutes of working hard and getting almost nothing done but then suddenly finding a way to do it efficiently) now we're cooking with gas" What is the definition of "cooking with gas"?