Corn Chowder

Corn Chowder
8 cups frozen corn
4 (or more, depending on size) baking potatoes
1 onion, chopped
1/4 cup butter
1/4 cup flour
8 cups milk (you can use evaporated milk rather than liquid, if you'd like)
salt and pepper to taste

Saute the onion in the butter till transparent and softened. Whisk in the flour until smooth, add milk, potatoes, and corn. Bring heat up to hot, but not boiling, then cover and reduce heat to a simmer. Simmer for 30 minutes until the potatoes are tender. Salt and pepper to taste.