You will need 1-2 Tbsp of juice. Depending on the size of your oranges, the juice from one orange may be plenty. I like to use a little strainer to catch any seeds and pulp. Set the juice and zest ...

Stir in the orange zest and juice until thoroughly combined. For the chocolate variation, omit the milk from the basic recipe. Cream the butter and sugar, as above, also adding the cocoa powder.