Make a blueberry syrup: Add blueberries, water, sugar, and lemon juice to a heavy saucepan and turn heat to medium. As berries begin to swell, use the back of a fork to smash them.
2 cups blueberries, 2/3 cup sugar, 1/4 cup water, 1 tablespoon lemon juice
Bring mixture to a boil for one minute then reduce to a simmer. Let simmer, stirring periodically, for 5 minutes until mixture thickens slightly and darkens in color. Remove from heat.
In a blender, add milk, cream and blueberry mixture. Blend on high. Strain mixture if needed.
2 1/4 cups whole milk, 1/4 cup heavy cream
Let base cool in fridge for at least 4 hours or overnight. Place chilled based in ice cream maker, and churn 7-10 minutes, until thick.
Pour into storage container and place it into freezer. Let warm up at room temperature for about 10 minutes to make it easier to serve.