Once you factor in rent, then cooking at home is maybe not cheaper. Rent and mortgages is the black hole sucking all money from the restaurants. Not ingredients or wages.
On the other hand, how high is the marginal rent of a kitchen at home? It's usually included whether you use it or not - and some parts like the fridge would take up space even if you exclusively ate out.
On the other hand, how high is the marginal rent of a kitchen at home? It's usually included whether you use it or not - and some parts like the fridge would take up space even if you exclusively ate out.