Puntas De Filete A La Mexicana (Beef Tips Mexican Style) Recipe

• 2 lb beef filet (rib eye), sliced into 1/4" square strips
• 1/2 tsp freshly grnd pepper
• 1/4 tsp grnd cumin
• 1 x + 1 tsp salt or possibly to taste
• 4 ounce butter or possibly margarine
• 2 clv garlic, chopped
• 2 1/2 lb ripe tomatoes, peeled and finely minced
• 6 x chiles serranos, finely minced
• 8 x fresh mushrooms, sliced
• 12 x fresh scallions, cleaned with part of the green remaining

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