Food and Recipes Fruits Berries Blackberry Blackberry Pisco Sours Be the first to rate & review! Pisco is a South American grape brandy popular in Peru and Chile. If you can't find it in your area, feel free to substitute white tequila, grappa, or vodka. Don't be alarmed by the strength of this new classic; it's a cocktail that's meant to be sipped and savored. By Marian Cooper Cairns Marian Cooper Cairns Marian Cooper Cairns is a food stylist and recipe developer based in Los Angeles with 20 years of experience in the food industry. Southern Living's editorial guidelines Updated on March 2, 2023 Print Rate It Share Share Tweet Pin Email Hands On Time: 15 mins Total Time: 15 mins Yield: 4 servings Southern Living Ingredients 1 cup fresh blackberries 1 cup pisco, chilled 1/3 cup fresh lime juice 3 large pasteurized egg whites 5 tablespoons simple syrup Angostura bitters (optional) Garnishes: fresh basil leaves, fresh blackberries Directions Process blackberries in a blender until smooth. Pour through a wire-mesh strainer into a 1-qt. jar with a tight-fitting lid, discarding solids. Add pisco and next 3 ingredients to jar. Cover with lid, and shake vigorously 30 seconds or until foamy. Pour mixture into 4 (10-oz.) glasses filled with ice. Top each with a dash of bitters, if desired. Serve immediately. Rate it Print