Pit and soak the dates in hot water for about 30 minutes or until soft and mushy. Drain water before using.
Put washed berries and mint leaves, soaked and pitted dates, vinegar and water into a high-speed blender. Blend on high for 3-5 minutes until dates and berries are thoroughly processed and dressing is smooth.
Add a twist of freshly ground black pepper and salt to taste. You can adjust at this point by adding in a little more vinegar to taste.