> I would think that the 15 grams of truffles then would be equivalent to about 7-8 grams of dried mushrooms Spread throughout the day that would be reasonable

> I would think that the 15 grams of truffles then would be equivalent to about 7-8 grams of dried mushrooms Spread throughout the day that would be reasonable for a facilitated retreat, yes. Also depends on the variety, some strains can be extremely powerful, to the point that 3.5 grams is more than enough.