“Imagine it’s 100°F with 90 percent humidity; the air is still and sodden. You are hot and sticky, and even breathing requires effort. What you need is a nice, cold drink. Cucumber Fennel Fizz is the perfect blend of tangy and refreshing. The cucumber is the standout flavor with a hint of fennel in the background. The lime juice and vinegar add a nicely sour edge. The fizz makes everything livelier. You feel invigorated; you can once again face the world.”
Skin cucumber, cut into 4 chunks, and toss into blender.
Add lime juice, apple cider vinegar, ice, and 1-inch fresh fennel bulb. Add gin if using. Blend until smooth and foamy, about 1 minute. Don’t be tempted to add more liquid unless your cucumber is exceptionally dry and it refuses to blend. (In which case add a dash of soda.)
Split the cucumber mix between two glasses, adding either club soda or ginger ale in a 1:1 ratio. Add 5 frozen or fresh blueberries to each glass. Garnish with a sprig of fresh fennel.