My Magic Mushroom Powder (MMP) is an umami-packed seasoning salt that replaces Diamond Crystal kosher salt. If you don’t have any MMP, you can use Diamond Crystal kosher salt instead in a 1:1 ratio. Diamond Crystal kosher salt has a different structure than Morton’s kosher salt, so if you’re using Morton’s or a fine grain salt, cut the amount of salt in half. Whenever you’re unsure of the amount of salt, err on the side of caution—after all, you can always add more later to taste. If you’re not using MMP  but want to add some instant umami, toss in a few dried mushrooms into the stew!