Double Cream - cooking recipe

Ingredients

1 cup heavy cream
1 tablespoon buttermilk

Preparation

In a jar with a lid, combine cream with buttermilk and shake, covered tightly, for 1 minute.
Let mixture stand, wrapped in a thick towel, at room temperature for 12 hours, or until it is very thick, but still liquid.
Serve with scones and strawberry or raspberry preserves.