A rub for meat made from slippery jack mushrooms, or Suillus
Keyword: Mushroom Rub, Slippery Jack, Suillus
1/2cupfinely ground dried slippery jack mushrooms
2tablespoonshigh quality finely ground coffee or espresso
Combine the ingredients in batches and grind until smooth in a coffee grinder or highspeed blender like a vitamix. Transfer to a labeled, dated container and refrigerate until needed if not using immediately. The aroma of the coffee will die at room temperature eventually once it's ground.
Depending on the species of Suillus you're using, the strength of the mushroom flavor can vary a bit. My advice is to follow the recipe below, then take a small piece of scrap meat or trim, use it as a sample, cook, taste, and adjust the rub with a little more ground coffee if you want and go from there. Think of this as a guideline for making your own blend, it is just fine without any tinkering though, if you want.