1. Mix the celery with the ketchup, mayonnaise and hot sauce, if using.
2. Toss the shrimp with the dressing. Fill buns with the shrimp salad. Garnish with chopped chives.
292 calories, 11g fat, 2g saturated fat, 169mg cholesterol, 1104mg sodium, 22g carbohydrate, 2g fiber, 4g sugars, 22g protein