Marinate the steak in Corona beer for two hours, covered, in the refrigerator.
Meanwhile, make the carne asada marinade and store it in the fridge until you're ready to use it. After marinating the steak in beer, transfer the steak to a clean container and pour the asada marinade over the meat.
Cover the container and transfer it to the refrigerator for 3 hours.
Start your grill. Use the highest heat possible. I mean smoking, blistering, searingly hot. For skirt steak, grill 3 minutes per side, or 5 minutes per side for flank steak (depending on the thickness and how you like it cooked). Remove carne asada from heat and allow it to rest for 5 minutes.
While meat is resting, grill the tortillas on each side until slightly charred.
Slice carne asada thinly across the grain and serve with refried beans spread on grilled tortillas. Top asada tacos with crumbled cotija cheese, chopped cilantro and a squeeze of lime.
Nutrition information shown is for carne asada steak, without tortillas or toppings.