Lychee and elderflower are natural partners, with their delicate floral flavors and etherial sweetness. Nowhere is this more obvious than in the silk sheets, a cocktail we found while trawling cocktail message boards looking for rare lychee cocktail recipes that actually taste good (youd be surprised at how difficult this task has been) the heavy pour of elderflower liqueur might make this drink too sweet for some. You can scale it back a tad, if you like but dont cut back on the lychee puree (or syrup), or else you may find that the mild flavor of lychee doesnt come through at all.