Shrimp Tacos with Corn, Bacon and Lime Crema - Once Upon a Chef

Ingredients

• 1 cup sour cream
• 1 tablespoon fresh lime juice, from 1 lime
• Pinch salt
• 4 slices (6 oz) thick-cut bacon, diced
• 4 corn cobs, uncooked kernels removed
• 1 bunch scallions, white and green parts, thinly sliced
• 3 cloves garlic, finely chopped
• 2 lbs large (31/35) shrimp, peeled, de-veined, and tail removed, thawed if frozen
• 1 teaspoon ground cumin
• 1 teaspoon ancho chili powder
• Salt
• ¼ cup finely chopped fresh cilantro
• 1 to 2 tablespoons fresh lime juice, from 1 lime
• 12 small corn tortillas