Salvadoran Bean & Cheese Pupusas

Ingredients

• 2 cups uncooked pinto beans
• 2 tbsp olive oil
• 1 small yellow onion, finely chopped
• 2 cloves garlic, minced
• 3 1/2 cups shredded mozzarella cheese
• Salt to taste
• 3 cups masa harina
• 3 cups lukewarm water
• 2 small bag (170g) pre-shredded coleslaw mix
• 1 cup white onion, thinly sliced
• 1 medium carrot, grated
• 1 jalapeño, sliced
• 5 cups boiling water
• 2 1/2 cups distilled white vinegar
• 2 tbsp dried Mexican oregano