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Blue Raspberry Dirty Soda (Blue Lagoon / Beach Bum)

Blue raspberry dirty soda made with lemon lime soda, coconut syrup, and heavy cream served over ice in a clear glass.

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This Blue Raspberry Dirty Soda is bright, creamy, and refreshingly fizzy — made with lemon-lime soda, blue raspberry syrup, coconut syrup, and a swirl of heavy cream. Inspired by classic soda shop flavors, this fun drink comes together in minutes and is perfect for parties, summer days, or whenever you want a colorful treat.

Ingredients

  • 12 oz lemon-lime soda (such as Sprite), chilled
  • 2 oz blue raspberry or sour blue raspberry syrup (about 2 pumps)
  • 1 oz coconut syrup (about 1 pump)
  • 2-3 oz heavy cream
  • Ice

Instructions

  1. Fill a tall glass with ice.
  2. Pour the lemon-lime soda over the ice.
  3. Add the blue raspberry syrup and coconut syrup, gently stirring to combine.
  4. Slowly pour in the heavy cream to create the signature dirty soda swirl.
  5. Stir lightly if desired and serve immediately.

Notes

Use very cold soda to keep the drink crisp and bubbly.

Pour the cream last so it cascades through the soda without flattening the carbonation.

Adjust sweetness easily by reducing the syrup slightly if you prefer a lighter drink.

For the best presentation, serve in a clear glass to showcase the vibrant blue color and creamy swirl.