Chop the jalapeno in half and remove seeds
Add all ingredients to food processor except the meat and blend until smooth
Place meat in a glass or ceramic bowl, pour the marinade over the meat. Cover the bowl with a lid or plastic wrap. Place in the fridge and let it marinate for a minimum of 2 hours or up to 24.
Remove meat from fridge about an hour before cooking to let it come to room temperature.
Grill Pan Instructions: Place pan on the stove and set to high heat. Add a little oil to the pan and place the meat on the hot pan. The meat will cook quickly so keep close watch. Cook the meat for 1-3 minutes on each side
Outdoor Grill Instructions: Turn your grill to high heat. Drizzle a little bit of olive oil on the ranchera meat and cook for about 1-3 minutes each side, until nicely seared.
Remove from heat and let the meat rest for about 10 minutes. Slice meat against the grain and serve!