Chile-Cumin Lamb Meatballs with Yogurt and Cucumber

• 3 pasilla chiles, seeds removed, chopped
• 1½ teaspoons crushed red pepper flakes
• 1 tablespoon cumin seeds
• ¼ cup Sherry vinegar or red wine vinegar
• 1 tablespoon sweet smoked paprika
• 1 garlic clove, chopped
• ½ cup olive oil

Kosher salt

• ¼ small onion, chopped
• 8 garlic cloves, 7 chopped, 1 clove finely grated
• 1 tablespoon chopped fresh parsley
• 1 teaspoon chopped fresh oregano
• 1 teaspoon chopped fresh sage
• ¾ teaspoon fennel seeds
• ¾ teaspoon ground coriander
• ¾ teaspoon ground cumin
• 1 tablespoon kosher salt, plus more
• 1 large egg
• 1¼ pounds ground lamb
• 1 tablespoon rice flour or all-purpose flour
• 4–5 tablespoons olive oil, divided
• ½ English hothouse cucumber, thinly sliced
• ½ teaspoon finely grated lemon zest
• 2 tablespoons fresh lemon juice
• 1½ tablespoons Sherry vinegar or red wine vinegar

Freshly ground black pepper

• ½ cup plain sheep’s-milk or cow’s whole-milk yogurt
• ¼ cup chopped fresh mint

Crushed red pepper flakes (for serving)

A spice mill or a mortar and pestle

1. Toast chiles, red pepper flakes, and cumin seeds in a dry small skillet over medium heat, tossing occasionally, until fragrant and cumin seeds are golden, about 3 minutes. Let cool. Working in batches, finely grind in spice mill, then transfer to a blender.
2. Add vinegar, paprika, and garlic to blender and blend until smooth. With motor running, gradually stream in oil and blend until combined. Transfer to a large bowl; season with salt.
3. Do Ahead: Chile sauce can be made 2 days ahead. Cover and chill.
4. Pulse onion, chopped garlic, parsley, oregano, sage, fennel seeds, coriander, cumin, and 1 Tbsp. salt in a food processor, scraping down sides as needed, until finely chopped. Add egg, lamb, and flour and pulse until evenly combined. Form lamb mixture into 1 ½" balls.
5. Heat 2 Tbsp. oil in a large skillet, preferably cast iron, over medium-high. Working in 2 batches and adding another 1 Tbsp. oil to skillet if needed, cook meatballs, turning occasionally, until browned on all sides and cooked through, 5–8 minutes. Transfer meatballs to paper towels to drain.
6. Transfer all meatballs to bowl with chile sauce and toss to coat.
7. Toss cucumber in a medium bowl with lemon zest, lemon juice, vinegar, and remaining 2 Tbsp. oil; season with salt and pepper.
8. Spoon yogurt into bowls. Evenly divide meatballs among bowls; top with dressed cucumber and mint and sprinkle with red pepper flakes.
9. Do Ahead: Meatball mixture can be made 1 day ahead. Cover and chill.