Add 2 oz bourbon, 0.5 oz pure maple syrup, 0.5 oz fresh lemon juice, 2 dashes Angostura bitters and 1 dash orange bitters (if using) into a cocktail shaker. Fill the shaker about two-thirds full with ice cubes.

Shake vigorously for 10–15 seconds, until the shaker is well chilled and slightly frosted on the outside. This both chills and slightly dilutes the drink, integrating the maple syrup.

Build / Serve

Prepare glass

Place one large ice cube or fill a 16 oz Collins or highball glass with fresh ice.

Strain and top

Double-strain the shaken mixture into the prepared glass over the large ice cube. Top gently with 3 oz chilled club soda (adjust to taste) to reach about 12–14 oz total liquid for a 16 oz serving including ice.

Garnish

Express an orange peel over the drink (twist to release oils) and drop it in. Optionally slap a rosemary sprig between your palms to release aromatics and rest it on the glass rim.

Serve immediately with a bar spoon for gentle stirring if the guest wants more integration.