Pour 2 oz strained fresh orange juice into the chilled glass. If you prefer another fresh juice (grapefruit or pineapple), substitute 2 oz in place of the orange juice.

Optional balance

If the juice is very tart, add 1/2 teaspoon simple syrup. For extra brightness, add 1/4 teaspoon fresh lime juice. Do not add if your juice is already sweet enough.

Top with seltzer

Slowly pour 6 oz chilled house-made hard seltzer over the back of a spoon or down the inside of the glass to preserve carbonation and create a gentle layering effect.

Stir gently

Give the drink one or two gentle swirls with a bar spoon to combine juice and seltzer without flattening the bubbles.

Garnish and serve

Garnish with an orange wheel on the rim and a mint sprig if desired. Serve immediately with a straw or stirrer.

Batch (makes 8 cocktails)

In a large pitcher or beverage dispenser, combine 16 oz fresh strained orange juice and (if using) 4 tablespoons simple syrup and 2 tablespoons fresh lime juice. Stir until the simple syrup is fully incorporated.

Add 48 oz chilled house-made hard seltzer to the pitcher slowly to retain carbonation. Stir gently once or twice to distribute the juice mixture through the seltzer—avoid vigorous stirring.

Fill 8 highball glasses with ice (about 1 cup per glass). Pour the seltzer-mosa evenly over the ice.

Garnish each glass with an orange wheel and optional mint sprig. Serve immediately.