Mexican Pot Roast Tacos

I was craving shredded beef tacos like I have had in Mexico, it never occurred to me to look for a pot roast recipe but here it is. This was very tasty and simple to make. I did not have crushed tomatoes so I used some tomato sauce and the flavor was great. I only used a teaspoon or so of cayenne and it still had a kick. Mine was shreddable after about 3 1/2 hours but there was still a lot of liquid in the pot. I removed the meat to shred, and cooked the liquid till it was reduced to a thin sauce, then put the meat back in the pot a cooked a few more minutes. Made great tacos!