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Contains Dairy Serves: 6
In a saucepan, sauté garlic and onion in the butter until the onion is tender, Discard garlic. Gradually add milk to potato starch. Stir in salt and pepper. Slowly add milk mixture to sautéed onions and stir over low heat until thickened. The sauce gets very thick very quickly. Stir in well-drained spinach and heat.