*What can I substitute for mascarpone?
Mascarpone is one of the creamiest cheeses in the world. With nearly twice the fat of American cream cheese, it's a lush addition that makes this simple tart extraordinary. It's made by adding citric acid (lemon juice) to whole milk, and then waiting for it to set. If you don't have any on hand and don't have the time to wait for the homemade stuff, it's possible to make a pretty close approximation. While clotted cream or creme fraiche are also close, they don't have the fat content and aren't as thick. Cream cheese is the closest, fat-wise, but you'll need to add heavy cream and sour cream for the velvety texture of mascarpone. For this recipe, we've done the math for you—mix together 12 ounces of room temperature cream cheese (1 1/2 blocks) with 1/4 cup of heavy whipping cream and 1/4 cup of sour cream until combined.