Store the following foods at 40 °F, with adequate circulation. For optimal quality, store no longer than the times listed below.
Length of time may vary depending on the quality of product stored.

Butter 1-2 weeks

Cheese, cottage or ricotta 1-2 weeks

Cheese, cream 2 weeks

Cheese, hard, unopened 1-2 months

Cheese, hard, opened 3-4 weeks

Margarine 4 to 6 months

Milk or buttermilk, fluid 7-14 days

Sour cream 1-3 weeks

Whipped topping 2-3 weeks

Yogurt 7-10 days