Blueberry & Bay Leaf Preserves? Wonderfully complex, sweet and savoury combination of blueberry and bay with a hint of lemon. Combine together in a large saucepan about a pound of blueberries, 2-4 fresh bay leaves, 1 cup of sugar and 2-3 tablespoons of lemon juice. Bring to a boil and cook for about 10-12 minutes, stirring and adjusting time and temperature until mixture thickens, keeping in mind it will thicken more as it cools. Enjoy!