How to make Mascarpone Cheese?

Taken from http://www.bellaonline.com/ArticlesP/art25894.asp

Ingredients:

1 pint heavy cream
1/2 tsp tartaric acid
1/4 tsp confectioner's sugar

Directions

1. Fill the bottom of a double boiler with enough water to touch the top pan, but the top should fit neatly and not "float." Bring to a simmer.

2. Pour the cream into the top of a double boiler and place over simmering water.

3. Add the confectioner's sugar and whisk constantly.

4. When the cream is warm add the tartaric acid. Whisk over the heat until the cream reaches a temperature of 180 degrees.

5. Remove from heat and allow to cool, whisking occasionally.

6. Pour the mixture into a bowl through a thick cheesecloth (Fine Cheese Cloth 9-sq. ft.), or line a fine metal strainer with a coffee filter.

Cover the bowel and refrigerator for at least 12 hours before use.