Best Ancho Skirt Steak Quesadilla

Name: Best Ancho Skirt Steak Quesadilla
Ingredients: 1 Pound skirt steak; Kosher salt and pepper, to taste; 3 Tablespoons ancho chili powder (home dried and ground, if possible); 1/2 Cup water; One 15-ounce can refried beans; 1/2 onion, minced; 1 Teaspoon hot sauce; 1/2 Cup shredded Cheddar, plus more to taste; 1-1 1/2 tablespoons salsa, preferably homemade*; 2 1/2 teaspoons guacamole, preferably homemade**; Cilantro, julienned, to taste; Jalapeño, minced, to taste; 1 Teaspoon canola oil; Pepper mixture, for serving (optional)