Currently (Spice of Fabric 1.6.0-beta.2), a player's food history always stores the last N foods that player ate, regardless of if the player ate them all in a couple of in-game hours (and maintained that pace throughout the past few days) or ate something once per game year.

I would like if there was an option where a player's food history stores not the last N foods eaten, but instead kept track of the foods eaten in the past N game days (like in the original Spice of Life). For example, if the "History length in days" option is checked and the food history length N = 12, then all foods eaten in the past 12 days will be remembered in the food history, however many there are.

A use case for such an option would be to encourage a dynamic amount of dietary variety, based on each player's food energy usage and desired effects. For example, a player can get by with only eating the same food as long as it is once per in-game week. As a player's food energy needs increase, so does the required dietary variety for max efficiency.