Source: Ernesto's Mexican Food, Sacramento, California

1 (2 pound) lean pork roast (cut into 1/2-inch cubes)
10 green tomatillos
2 tablespoons diced jalapenos
1 small onion, chopped
1/2 bunch cilantro, chopped
1 tablespoon chopped garlic
Salt and pepper to taste

Place all ingredients in blender (except pork) and puree.

In a small pot, brown cubed pork with three tablespoons of oil. Make sure to brown all sides evenly. This should take about ten minutes.

Remove all excess oil from meat. Stir in pureed ingredients and let simmer for 20 to 25 minutes. Cooking time depends on size of cube and how much the meat cooked while browning.

Taste for flavor; for more spiciness, add jalapenos.