Chipotle Seasoned Pot Roast

3 (1/4 ounce to 1/2 ounce) stemmed, dried -- (3 to 6)

chipotle chilies (or canned chipotle chilies en adobo)

3 large garlic cloves, unpeeled

8 ounces (about 5 medium) tomatillos, husked and rinsed

Salt, about 1/2 teaspoon, plus a little coarse salt for the final presentation, if you have it

Sugar, about 1/4 teaspoon

Roast:

3 pound boneless beef chuck roast,

2-1/2 to

1 inches think (it'll cook best if it's tied into a compact shape)

1 tablespoon vegetable or olive oil

4 medium carrots, peeled and cut into 1/2 inch rounds

2 chayotes, peeled (if you'd like), pitted and cut into 1/2 inch pieces

4 medium boiling potatoes (like the red-skin ones), cut into 1/2 inch cubes

1/4 cup finely chopped cilantro