Add water and organic cane sugar to a small saucepan. Bring to a simmer over medium-high heat, then lower heat, stirring frequently until sugar dissolves into the water. Remove from heat and add tea. Allow it to steep for 4-5 minutes, then strain the syrup into an airtight container or bottle with a fine mesh strainer. Allow syrup to cool completely.
To Make Cocktail
Add 2 tablespoons of the Earl Grey simple syrup to a champagne flute. Add orange juice and top with Prosecco.
Notes
To store simple syrup: Keep extra simple syrup in an airtight container in the refrigerator for up to one week. Use the simple syrup to make multiple cocktails or use it in baked goods or drizzled on ice cream.