Grilled Shrimp Salad with Avocado and Chipotle Dressing

• ⅓ cup (3 fl oz/80 ml) plus 1 Tbsp mayonnaise

In a food processor, combine the mayonnaise, half of the cilantro, 2 tsp of the lime juice, the orange juice, shallot, chiles, ¼ tsp salt, and several grinds of pepper. Process until a creamy, smooth dress