2 1/2 tablespoons olive oil
12 ounces peeled shrimp
1/2 teaspoon salt
1/4 teaspoon ground black pepper
1 grapefruit
2 tablespoons tarragon
2 teaspoons brown sugar
1 teaspoon shallots
6 cups romaine lettuce
1 peeled avocado
1. Heat a large skillet over medium-high heat.
2. Add 1 1/2 teaspoons oil to pan; swirl to coat.
3. Sprinkle shrimp with 1/4 teaspoon salt and 1/8 teaspoon pepper.
4. Add shrimp to pan; cook 3 minutes or until shrimp are done, stirring frequently.
5. Remove from pan; keep warm.
6. Peel and section grapefruit over a bowl, reserving 3 tablespoons juice.
7. Combine grapefruit juice, remaining 2 tablespoons oil, remaining 1/4 teaspoon salt, remaining 1/8 teaspoon pepper, tarragon, brown sugar, and shallots in a large bowl, stirring well with a whisk.
8. Add lettuce; toss.
9. Arrange 2 cups lettuce mixture on each of 4 plates.
10. Top each serving with 3 avocado wedges; divide shrimp and grapefruit sections evenly among servings.