If you ask, theyll add some beer, which I reccomend. A cheap cerveza is fine. Dos Equis, etc.

layer the meat with bits of the marinade in between. Put into a plastic bag and pour marinade remains over. Seal bag, let sit for a few hous if you can in fridge. Grill a few minutes on a side (look for just a little char)

You gotta buy the thin thin beef for it. But you can use the marindae for chicken, pork, lengua, even firm fish and shrimp. You can also use it for a yummy crab salad. Just shred the cooked crab meat and pour the marinade over. Then serve on tostadas (real ones) with a little mayo and another squeeze of lime (mexican sweet lime!)