* Tortillas should be 25 cm in Diameter and warmed. ~------------------------------------------------------------------------Heat beef and refried beans separately. Place about quarter cup of the beef on the center of each tortilla. Spoon about 2 T of the beans onto the beef. Top with quarter cup of the lettuce and about 2 T each of tomatoes and cheese. Fold one end of the tortilla up about 3 cm over filling; fold right and left sides over folded end, overlapping. Fold down remaining end, and serve. REFRIED BEANS: Heat lard in 25 cm skillet over medium heat until hot. Add pinto beans; cook for 5 minutes, stirring occasionally. Mash beans; stir in remaining ingredients. Add oil to skillet if necessary; cook and stir until smooth paste forms, about 5 minutes. Garnish with shredded cheese, if desired.