Chill your glass: Place a Collins or highball glass in the freezer while you prep. A cold glass keeps the bubbles lively.
Prep the basil and lemon: Gently slap 4–6 basil leaves between your palms to release their aroma.
Squeeze fresh lemon juice and strain out seeds.
Muddle with care: In a shaker, add the basil, 3/4 ounce simple syrup, and 1 ounce lemon juice. Use a light touch to muddle—just press and twist a few times. You want fragrance, not shredded leaves.
Add vodka and ice: Pour in 2 ounces vodka.
Fill the shaker with ice and shake for 8–10 seconds to chill without over-diluting.
Strain into glass: Fill your chilled Collins glass with fresh ice. Double-strain the mixture into the glass to keep out basil bits for a clean look and taste.
Top with club soda: Add 2–3 ounces club soda, depending on how strong or bubbly you prefer. Stir gently to combine.
Garnish and serve: Add a lemon wheel and a basil sprig.
Sip right away while it’s cold and fizzy.