Harvard Beets - cooking recipe

Ingredients

2 c. sliced beets, cooked (canned or fresh)
1/2 c. sugar
1/2 c. vinegar
1 Tbsp. cornstarch

Preparation

Cook or heat the beets.
Boil together the remaining ingredients until thick and clear.
Add some butter or margarine about the size of a walnut.
Add the beets and mix.