From The Joy of Muffins - The International Muffin Cook Book. Here's what the intro says about this recipe. Danish desserts make ample use of cream, sour cream and butter from Denmark's thriving dairies. A walk through Copenhagen's Tivoli Gardens is hardly complete without sampling the luxurious creamy Danish desserts which inspired this light sour cream muffin with the mocha cream filling. Try it with dark Scandinavian coffee for a special dessert treat.