Moroccan Merguez Lamb Burgers with Cucumber and Ginger Yogurt

Ingredients

• 1 1/4 pounds lean grass-fed ground lamb
• 1/2 pound ground pork
• 6 cloves garlic, minced
• 1 ½ tablespoons paprika
• 1 ½ teaspoons ground cumin
• 1/2 teaspoon ground cloves
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1 ½ teaspoons prepared harissa or more to taste
• Kosher salt and freshly ground pepper
• ¼ cup fresh chopped cilantro, leaves and stems
• 6 slices coarse textured bread, toasted