Step 1

Mix garlic and olive oil in a small bowl and let sit for about 1 hour, or until needed.

Step 2

Mix the yogurt and sour cream together in a bowl until combined. Add the onions and tomatoes and toss until well coated. Season with salt, freshly ground black pepper, and cayenne. Wrap in plastic wrap and chill in a refrigerator until needed.

Step 3

Preheat a charcoal grill until coals are white and ashy.

Step 4

Grill bread over hot charcoal, rotating as needed, until both sides are nicely toasted and slightly charred.

Step 5

Brush grilled bread with the garlic olive oil and use a slotted spoon to transfer the tomato salad over top of each. Excess dressing can be spooned over if desired. Garnish with chives and serve immediately.