Homemade Chorizo

INGREDIENTS

• 4 tablespoons kosher salt
• 2 tablespoons granulated onion
• 3 to 5 teaspoons pequen chili powder or cayenne pepper
• 2 chipotles in adobo sauce
• 1/2 teaspoon white pepper
• 1/4 cup red wine vinegar
• 4 tablespoons ancho chili powder
• 2 tablespoons paprika
• 5 pounds well-marbled boneless pork butt
• 5 cloves garlic
• 1/2 teaspoon ground cumin
• 1 teaspoon dried oregano
• 2 ounces hog sausage casing (about 14 feet)
• 1/4 cup tequila
• Vegetable oil, for the grill