Plus: Ultimate Cocktail Guide
Put the cup of berries in a wide-mouthed jar and pour in the vodka. Seal the jar. Let stand at room temperature for 6 to 8 weeks, until the full flavor has fully developed.
Strain the vodka into a pitcher or bowl and stir in the simple syrup. Transfer to a 1-liter bottle and add the fresh berries. Seal the bottle and store in the freezer. Serve ice-cold, in shot glasses.