Smoked Salmon with Caviar on Cucumber Recipe

"An easy-to-make cold appetizer like this one is key for cocktail parties because the elements can be made ahead, refrigerated, and put together at the last minute. Plus this simple yet sophisticated recipe is practically foolproof: Just combine the ingredients in a food processor, pipe onto English cucumber rounds, and top with your favorite caviar. It’s worth spending a few dollars on a star piping tip to make the presentation extra beautiful. What to buy: Fromage blanc, a fresh cream cheese, can be found at cheese stores and gourmet markets. Good-quality whipped cream cheese is your best bet for a substitute. Special equipment: You’ll need a large piping bag and a 1/2-inch star piping tip for this recipe...."