According to beloved children's author Roald Dahl, frobscottle is the fizzy, delicious drink brewed by the Big Friendly Giant (BFG), an enormous and benevolent creature who blows good dreams into children's ears at night. One of the extraordinary features of the drink is that, since the bubbles float down rather than up, it produces what can only be tactfully described as upside-down burps. Homemade frobscottle may not have the same effects as the beverage concocted by the BFG, but it's a bubbly treat nonetheless.
(Yield four servings)
Start by blending the kiwis, lime juice and yogurt until smooth. Strain through a sieve. (Some of the kiwi seeds might get through, but they'll add texture.) Stir in the lemonade, and then pour in the cream soda. Serve the beverage immediately to preserve the fizz and to keep it from curdling.