When the weekend rolls around, some people -- we won't call them boring, but they're not exactly exciting -- enjoy quietly reading the Sunday paper over a cup of steaming coffee. But real drinkers understand the pleasure that a brunch cocktail can bring, and there's no better place to enjoy one than at Piscos Restaurant. Piscos features a full build-your-own Bloody Mary bar, but we went instead for the Tisana ($3.50), a Venezuelan tradition that combines tropical fruit juices with champagne. Served in a martini glass and garnished with a cherry, this bright-yellow bebida is a fizzy pineapple celebration. And you don't need to drink it on an empty stomach: For $12, you can help yourself to as much cheese, fresh fruit, cold cuts and other delights as you desire from the "intercontinental buffet," and then choose a tantalizing dish for the rest of your meal. The Chilean Scramble, perhaps, or the Huevos de Argentina? Piscos, which is named for the South American white brandy distilled from muscatel grapes, is also known for serving strong Pisco sours and Brazilian Caipirinhas into the wee hours -- so why not just make a day (and night) of it there?