- a chef is faster
- a chef will produce better quality
- but a chef charges for their time
A restaurant often is paying half the price to ingredients and half to overhead; which means you can get it “cheaper” despite paying more for ingredients — since 150% as much on ingredients is still only 75% cost, once you don’t count personal overhead.
You need a lot of efficiency on the professional side to offset that cook time and kitchen space are “free” on the home side of the equation.