Sausage, Corn and Poblano Chowder

Ingredients

• 5 tablespoons unsalted butter, divided
• 4 fresh sausage links (such as spicy Italian or garlic), casings removed
• 2 sweet onions, chopped
• 4 celery stalks, chopped
• 5 poblano peppers, stem and seeds removed, chopped
• 4 garlic cloves, minced
• ⅓ cup all-purpose flour
• 4 cups chicken broth, homemade or store-bought
• 1 cup whole milk
• 1 teaspoon ground cumin
• 1 teaspoon ground coriander
• Cayenne pepper, to taste
• Kosher salt
• freshly ground black pepper
• 2 large russet potatoes, peeled and diced
• 3 cups corn kernels, frozen or drained, if canned
• ½ cup heavy cream
• ½ cup chopped fresh chives, plus more for garnish
• ½ cup chopped fresh cilantro, plus more for garnish