World's Best Clam Chowder

A husband pleaser!

2 (6 1/2 ounce cans) clams
1 cup chopped onions
1 cup chopped celery
3 cup diced potatoes
1/4 cup butter
1/4 cup flour
2 cups half-and-half cream
2 cups milk
1 1/2 teaspoons salt
1/2 teaspoon granulated sugar
1/2 teaspoon vinegar

Drain juice from clams and pour over potatoes. Add enough water to cover. Cook for about 10 minutes then add sugar, vinegar, and salt. Cook until potatoes are tender.

Melt butter, saut