Summer Corn and Shrimp Succotash

INGREDIENTS

3/4 lb

jumbo shrimp

2 tbsp

olive oil, divided

1 cup

unsalted chicken stock

8 cups

water

3 cups

shelled fava beans (about 4 1/2 pounds unshelled beans)

1 cup

(1-inch) diagonally cut green beans (about 1/4 pound)

2 tbsp

butter, divided

garlic cloves, minced

shallots, minced

1 1/2 cups

fresh corn kernels (about 3 ears)

1/2 tsp

kosher salt

1 tbsp

chopped fresh dill

1 tbsp

chopped fresh tarragon

1/2 tsp

hot sauce

2 tbsp

reduced-fat sour cream

1/2 tsp

freshly ground black pepper