Chef John's Mulligatawny Soup Recipe

Ingredients

• 1 tablespoon unsalted butter
• 1 tablespoon vegetable oil
• 1.25 cups boneless, skinless chicken thighs
• 1 teaspoon kosher salt, or more to taste
• 1 tablespoon curry powder
• 1 teaspoon garam masala
• 0.5 teaspoon ground cumin
• 0.5 teaspoon freshly ground black pepper
• 0.25 teaspoon ground mustard
• 0.25 teaspoon ground coriander
• 0.25 teaspoon cayenne pepper
• 4 cloves garlic, minced
• 1 tablespoon finely grated fresh ginger
• 1 large yellow onion, diced
• 2 carrots, diced
• 2 stalks celery, diced
• 1 tablespoon tomato paste
• 1 cup cubed Yukon Gold potatoes
• 0.5 cup seeded and diced tomato
• 2 small Granny Smith apples - peeled, cored, and diced
• 0.5 cup dry red lentils
• 1 bay leaf
• 1 teaspoon tamarind paste
• 6 cups chicken broth
• 3 tablespoons coconut cream
• 0.5 cup plain Greek yogurt, or to taste
• 0.25 cup chopped fresh cilantro, or to taste
• 0.25 cup sliced green onion, or to taste
• 1 pinch red pepper flakes, or to taste