First, using gloves remove the stems and seeds from the dried chilies.
In a pot, add the cleaned chilies, onion and garlic. Bring water to a boil then lower to a simmer and cook for about 10 minutes to soften everything.
Once chilies are hydrated, drain the water and add ingredients into a blender. Also, toss in the bouillon cube, tomato sauce, brown sugar, abode sauce and chilies. Blend everything until smooth. Then stir in the cumin and oregano.
Place the brisket into the crockpot. Then, pour the blended sauce over the top.
Turn the crockpot on high for 6 hours. Allow the brisket to cook until tender enough to shred apart with a fork.
Once done, allow to cool a bit then serve over tortillas with your favorite topping.