Creamy Mexican Street Corn Soup with Poblanos

Ingredients

• 4 tablespoons butter.
• 1 medium yellow onion, finely chopped.
• 1 stalk celery, finely chopped.
• 1 medium poblano pepper, chopped.
• 4 cloves garlic, minced.
• 1 tablespoon chile powder.
• 1 teaspoon dried oregano.
• 4 cups chicken stock.
• 3 medium yukon gold potatoes, diced.
• 6 cups corn (fresh or frozen).
• 1 cup heavy cream.
• 2 teaspoons sugar.
• 1/2 cup cotija cheese.
• 1 tablespoon lime juice.
• 1/4 cup cilantro, minced.
• 1/2 cup Mexican crema or sour cream.