Basic Corn Chowder

Photo: Craig Lee for The New York Times

Ingredients

• 4 to 6 ears of corn

• 1 tablespoon butter or neutral oil, like canola or grapeseed

• 1 medium onion, chopped

• 2 medium potatoes, peeled and diced

• Salt and freshly ground black pepper

• 2tomatoes, cored, seeded and chopped (optional)

• 1cup whole or low-fat milk

• ½ cup chopped parsley (optional)

Instructions

1. Shuck corn, …