The answer depends on what you are trying to convert the cup to.
1 cup equals 1/4 quart
1 cup equals 16 tablespoons
1 cup equals 8 fl. ounces
Lemon curd is a rich, tart spread made with lemons. The link below shows how to make lemon curd.
http:/www.finecooking.com/articles/foolproof-lemon-curd-method.aspx