Preheat your oven broiler to HI. Line a sheetpan in foil and place the 7 poblano peppers and 3 Roma tomatoes on top of the foil. Place it under the oven broiler for 3 to 5 minutes until the peppers and tomatoes are charred all over, flipping them halfway through.
Remove from the oven and place the poblano peppers in a container with a lid let them sit there for 5 minutes, transfer the tomatoes to the blender. Peel the peppers and remove the seeds. Transfer 4 peppers to the blender, and cut the remaining 3 poblano peppers into strips, and reserve for the filling. Add the onion to the blender, and puree until smooth.
Heat lard over medium low heat in a large skillet. Reduce heat to low and pour in sauce. Simmer for 5 minutes and add the milk, cream, alcohol, and season to taste with salt and pepper.
Heat your tortillas, tradtionally this is done by dipping them briefly in hot lard or oil, but you can also heat them up in a comal or griddle sprayed with oil. Dip a tortilla in the hot sauce, and transfer to a plate. Place a spoonful of avocado, cheese, and chile strips in the center of the tortilla and roll the tortilla around the filling. Transfer to a plater.
Repeat this step with the rest of the tortillas and serve hot, garnishes with lettuce and sliced radishes.