Three of the most popular orange liqueurs are Cointreau, Grand Marnier and Drambuie. Cointreau, from France, is clear and the least sweet of three. Grand Marnier is sweeter than Cointreau, but not as thick as Drambuie. Drambuie is a Scottish specialty, amber in color and the most syrupy of the three. As well as being a warming after-dinner cordial or ingredient in the Blueberry Muffin Cake, orange liqueurs also add a nice splash of flavor to fresh fruit cups.
Substitute nonfat plain yogurt for the sour cream in this recipe.