In 2 cup microwavable measuring cup, add lemon juice, water, blueberries, and sugar. Microwave on high until blueberries begin to pop, about 60 to 90 seconds.
Pour through metal strainer over large heat safe container to remove blueberry skins and pulp. Let cool.
Pour vodka over ice in tall cup. Pour cooled blueberry mixture over. Stir with a straw and garnish with fresh blueberries and a lemon slice.
Notes
Always use freshly squeezed lemon juice to achieve the most flavor.Use ripe and juicy blueberries to get the best overall taste.Chill all the ingredients before mixing for a more refreshing and well-balanced cocktail.