Eli5: how do fast food franchises keep their recipes a secret and food tasting the same at different locations?

Question

Eli5: how do fast food franchises keep their recipes a secret and food tasting the same at different locations?

In: Economics

Answer 1

The seasoning arrives pre-mixed and portioned, so the only ones who know the actual recipe are the ones who set the ratios in the packing machines.

Or it’s all seasoned in a factory and frozen, then the restaurant is only responsible for heating.

Or, since every store sources their ingredients from the same place, the recipe isn’t secret at all and it’s just the consistency of the ingredients which maintains uniformity.