Combine two-thirds of the lemon zest (reserve the rest for garnish), the chopped mint, sugar, and 1 teaspoon each salt and pepper in a food processor and process until the mixture has the texture of coarse sand.

Rub each chop well on both sides with a little of the mint mixture. Place on a baking sheet or platter, cover, and set aside at room temperature.

Preheat a gas grill or prepare a fire in a charcoal grill.

Combine the yogurt and cumin in a small bowl, blending well. Season with salt and pepper and transfer to a small serving bowl. Set aside.

Grill the chops, turning once, until medium-rare, about 2 minutes on each side. Pile the chops on a serving platter and garnish with the reserved lemon zest and the mint sprigs. Set out the cumin yogurt next to the platter, and serve immediately.

Preheat a gas grill or prepare a fire in a charcoal grill. Place a piastra on the grill to preheat.

Slice the tomatoes creatively (leave very small ones whole, or halve them) and lay out on a platter. Tear the basil leaves over the tomatoes, strewing them about. Set aside.

Season the onion slices on both sides with salt and pepper. Place them on the hot dry piastra and cook, unmoved, for 7 to 10 minutes, until well charred on the first side. Using tongs, carefully turn the slices over and cook for 7 to 10 minutes on the second side, until well charred and softened. Transfer to a plate and let cool slightly, then separate the onion slices into smaller rings and scatter them over the tomatoes. Drizzle the whole mess with 3 to 4 tablespoons of the olive oil.

While the onions cook, carve a checkerboard pattern about 1/4 inch deep into one side of each scallop. Season them all over with salt and pepper, toss them in a bowl with the remaining 2 tablespoons oil, and stir gently to coat.

Place the scallops on the dry clean piastra, design side down, and cook for 5 to 7 minutes, unmoved, until almost cooked (they should be opaque almost all the way through). Flip them over and sear for just 30 seconds, then remove and arrange on the tomato salad.

Sprinkle the tomatoes with the Maldon salt, squeeze the lemon halves over the scallops and tomatoes, and serve.