Green Chile Chowder

Name: Green Chile Chowder
Ingredients: 1 jalapeno; 2 poblanos; 1 tablespoon butter; 1/2 white or yellow onion, (diced); 1 teaspoon minced garlic; 2 cups chicken broth ((or vegetable broth for a vegetarian version)); 1 large russet potato, (peeled and chopped into half-inch pieces); 1/2 teaspoon cumin; 1/2 teaspoon salt, (or to taste); 1/4 teaspoon paprika; 1/4 teaspoon pepper; 1/4 teaspoon chili powder; juice of 1 lime; 1/3 cup cilantro, (roughly chopped); 2 cups half and half ((I used fat free)); 1 tablespoon corn starch