INGREDIENTS
1 lb
Skirt steak
1/2 tsp
Oregano, dried
1
Red onion, halved and cut into 1/4-inch-thick slices, medium
1 tbsp
Chili powder
1
Kosher salt and freshly ground black pepper
1/4 tsp
Sugar
1 tbsp
Vegetable oil
8
6-inch corn tortillas
1
Sour cream