[thereisnospork]

It should be sustainable/economical though, at least for 'basic' or staple foods.

There are a lot of efficiencies a burger joint, for instance, should be able to employ that a personal kitchen can't. It probably won't be cheaper, but it ought to be some fraction of minimum wage * the time investment of diy cooking[0]. Or at least on that order.

[0] ~minimum wage (plus payroll and etc.) being fair pay for burger flipping, and being that a professional kitchen can maintain a much higher throughput per person (e.g. a pro burger flipper in a real kitchen can probably make 10+ burgers in the time I would take to make one)