What to so with mesa flour?

I just found this on papayahead, it sounds awesome!

Pupusas Revueltas
Ground turkey and lowfat cheese help keep down the fat and calories in this tasty dish.
This recipe provided by the US National Heart, Lung, and Blood Institute (NHLBI)
This recipe makes 12 servings.
Prep Time: 10
Cook Time: 50



Ingredients:
1 pound ground chicken or turkey breast
1 tablespoon vegetable oil
1/2 small onions, diced
1 clove garlic, minced
1 medium (approx 2-3/4" long, 2-1/2" dia each) green bell peppers, seeded, minced
1 small whole (2-2/5" dia) tomatoes, chopped
5 cups masa flour
1/2 teaspoon salt
6 cups water
1/2 pound part skim mozzarella cheese, grated

Recipe Instruction:
1. In nonstick skillet, saute chicken or turkey in oil over low heat until it turns white. Stir chicken constantly to keep it from sticking.
2. Add onion, garlic, green pepper, and tomato. Cook chicken mixture through. Remove skillet from stove and let mixture cool in a bowl in the refrigerator.
3. Meanwhile, place masa flour and salt in large mixing bowl and stir in enough water to make stiff, tortilla-like dough.
4. When chicken mixture has cooled, mix in cheese.
5. Divide dough into equal portions. With your hands, roll dough into balls and flatten each into a 3 inch wide, 1/2 inch thick circle. Put spoonful of chicken mixture in middle of each circle of dough and bring edges to center. Flatten ball of dough again until it is 1/2 inch thick.
6. In very hot iron skillet, cook pupusas on each side until golden brown. Serve hot.