With so much apple cider vinegar and an abundance of raspberries, I made he base for the balsamic vinegar on 3/10 and left it with the raspberries for one month. Today I strained out the berries and was left with a beautifully red vinegar. I added 3/4 sugar to 1 part of vinegar and ended up with 3 lovely bottles of raspberry balsamic vinegar. MMM what a treat for the winter.
Some benefits of raspberry vinegar (without the sugar)