Combine the blueberries, water, sugar, and vanilla extract in a small pot. Bring to a boil over high heat. Lower the heat and simmer until the sugar is completely dissolved and the blueberries have burst and softened, about 15 minutes. Remove from heat and puree the mixture in a blender. Strain the mixture, pressing on the solids to extract as much liquid as possible. Discard the solids or save them for another use.  Note: You don’t have to puree the blueberries. You can strain once the blueberries have softened and burst. I like to puree the blueberries for a thicker more concentrated blueberry flavor.

Transfer the blueberry syrup to a glass container with a tight fitting lid. Syrup will keep for a couple of weeks in the refrigerator. To extend the life of your blueberry syrup, add about a tablespoon of vodka. Your syrup will last MONTHS this way.

Makes about 2 cups of blueberry syrup.

To an 8 oz glass, add a few ice cubes, followed by couple of tablespoons of blueberry syrup. Add seltzer until you reach the top of your glass. Stir quickly to combine. Sip. That is all.