Now we have seasons and truffle hunting become hard and short in time. IRL there is a lot of different truffles that grows all seasons - include winter, so my suggestion - add few more types of truffles for each season - with different feps and different rarity - guess winter truffles should be found only with high snout.
And maybe buff could be only 1(just "truffeled") - so i can't have white-black-yellow-pink-rainbow truffeled food.