Presently, there is a "distinct_food_groups_eaten" that counts the food groups in your history, and passes that value to the formula.

I would like to have a similar variable available for "distinct_foods_eaten", if possible.

One could do something like:

I:food.history.length=100
S:food.modifier.formula=MAX(1, 1 + (distinct_foods_eaten * 0.01))

Or:

S:food.modifier.formula=IF(cur_history_length >= 1, 0.5 + (0.5 * (distinct_foods_eaten/cur_history_length)), 1)

Thanks so much for the mod though, its versatility is impressive.