Sweet Potato and Corn Chowder

Ingredients

• 4 tablespoons butter
• 6 ears corn, husks and silks discarded and kernels removed (reserve cobs)
• 1 medium onion, finely diced (about 1 cup)
• 2 medium cloves garlic, minced
• 3-4 jalapeños, seeded and finely chopped (optional)
• ½ tbl. ancho chile powder
• 3 tablespoons flour
• 6 cups corn stock (recipe below)*
• 2 medium-sized sweet potatoes, peeled and cut into 1/2-inch dice (about 1 1/2 - 2 cups diced)
• 1 1/2 cups heavy cream
• Kosher salt and freshly ground black pepper
• 3 scallions, finely sliced, for garnish
• *if you don't have the time or desire to make corn stock, feel free to substitute chicken or vegetable stock
• 6-8 Cobs
• ½ yellow onion, roughly chopped
• A few stems parsley
• A few sprigs of thyme
• 1 bay leaf
• 4 peppercorns