2 1/4 cups flour (1/4 cup whole wheat optional)
1 1/2 tsp salt
1 stick unsalted butter, frozen and cut into dice
1 egg
1/3 cup ice water
1 tbs vinegar (I like cider, but white is fine)
For the filling:
1 large sweet potato
1 tsp butter or oil
Splash of milk
2/3 cup chopped yellow onion
1 tbs oil
Salt and pepper, to taste
Pinch chipotle powder
3.5-5.25 oz chorizo, casing removed, chopped in small dice (2-3 sausages)
1 large egg