Barbotage is a refreshing cocktail made with gin, lemon juice, simple syrup, and sparkling water. It has a citrusy and bubbly flavor that is perfect for a summer day or a casual get-together. The combination of gin and lemon juice gives it a tangy and zesty taste, while the simple syrup adds a touch of sweetness. Top it off with sparkling water for a fizzy finish. Serve it over ice and garnish with a lemon slice for a visually appealing drink.