Mulligatawny

Ingredients

• 9 tbsp. unsalted butter
• 1 tsp. Aleppo pepper (optional)
• 1⁄2 tsp. cumin seeds
• 1⁄2 tsp. coriander seeds
• 1⁄2 tsp. black mustard seeds
• 2 dried chiles de arbol
• 1 plum tomato, minced
• 3 tbsp. minced ginger
• 6 cloves garlic, minced
• 1 large yellow onion, minced
• 1⁄2 jalapeño, minced
• 1⁄4 cup flour
• 1 tbsp. ground coriander
• 2 tsp. ground cumin
• 1 1⁄2 tsp. ground turmeric
• 9 chicken stock or vegetable stock
• 1 3⁄4 cups red lentils
• 3 tbsp. minced cilantro
• 1 cup canned coconut milk
• 1⁄4 fresh lemon, juiced, plus more to taste
• Kosher salt and freshly ground black pepper, to taste
• Plain yogurt, to garnish