Lean Chinese Five Spice Pork with Asian Slaw

Name: Lean Chinese Five Spice Pork with Asian Slaw
Ingredients: 1 1-pound pork loin; Salt; 1 tablespoon chinese five-spice powder; 1 tablespoon vegetable oil; 5 ounces exotic mushrooms (optional); 2 tablespoons mayonnaise; 1 tablespoon water; 2 teaspoons rice vinegar; Up to 1 tablespoon sriracha (to taste); 1 sweetheart, napa, or green cabbage, shredded; 4 green onions, finely sliced; 1 cup (about 1 bunch) roughly chopped fresh cilantro; A handful of salted, roasted peanuts, roughly chopped