Carne Asada Tacos

Carne Asada Tacos 2 tablespoons of vegetable oil 3 lbs flank steak or you can use skirt steak 1 white onion chopped (I keep chopped onion in the freezer) 2 fresh limes plus extra for toppings (this is what i use to get all the lime juice out) 1 cup of beef stock a bundle of cilantro 1 teaspoon of salt 1 Teaspoon of pepper 1/2 stick of butter 2 mini corn tortillas Thinly slice the steak. Then chop into bite site pieces. Place the steak in the crock pot. Add half the onions to crock pot. Save the rest of the onions. Meanwhile season with salt and pepper. Pour the beef stock over the beef. Squeeze the juice of two fresh limes over the meat and onion mixture. (this is what i use to get all the lime juice out) Cook on low for 6 to 8 hours, or on high for 3-4 hours. While the steak is cooking, melt the butter in another skillet or I used an electric skillet. Fry the mini corn tortillas in the melted butter for 1 minute until they are soft. Allow them to cool slightly. You will need 2 mini corn tortillas per taco. Spoon the meat mixture on the tortillas.