Beery Chorizo Queso Fundido

Name: Beery Chorizo Queso Fundido
Ingredients: 4 tablespoons unsalted butter; 1 large onion, thinly sliced; 1 jalapeno, diced (seeds removed if desired); 2 cloves garlic, finely chopped; 1/4 pound fresh chorizo, removed from the casing; 3 tablespoons all-purpose flour; 2 teaspoons chili powder; 1/2 teaspoon ground cumin; One 12-ounce Mexican lager beer; 1/4 cup whole milk; 4 cups shredded Monterrey Jack cheese (about 1 pound); 1/2 cup loosely packed fresh cilantro leaves, roughly chopped, plus more for garnish; Tortilla chips, for serving