Creating the Honey Rosemary Grapefruit Sodas is a straightforward process that yields delightful results. Follow these easy-to-understand instructions:

1. Juicing the Grapefruits: Cut the grapefruits in half and juice them until you have 2 cups of fresh juice. Strain if desired to remove pulp and seeds.
2. Prepare Honey Simple Syrup: In a small saucepan, combine 1 cup of honey with 1 cup of water.
3. Infuse with Rosemary: Place the rosemary sprigs in the saucepan and bring to a simmer over medium heat. Stir until the honey dissolves, then lower the heat. Allow it to simmer for about 10 minutes to infuse the rosemary flavor.
4. Cool the Syrup: Remove the saucepan from heat and let it cool for 20 minutes. Strain the rosemary out of the syrup and set it aside.
5. Mix the Soda: In a large pitcher, combine the fresh grapefruit juice and rosemary-infused honey syrup. Stir well to combine.
6. Add Sparkling Water: Slowly pour in the sparkling water and mix gently to combine, ensuring the carbonation is preserved.
7. Serve Over Ice: In tall glasses, add ice cubes and pour the Honey Rosemary Grapefruit Soda over the ice.
8. Garnish: Add a slice of grapefruit and a sprig of rosemary to each glass for a beautiful finish.

These steps will guide you in crafting this amazing soda effortlessly, ensuring that every sip is as delightful as the last.