Edit – August 2017: I have omitted adding water to the blueberry preserves I made this year because I now prefer a much thicker preserve that is more like a runny jam. I have adjusted the recipe accordingly but you can certainly still add some water if you prefer a more runny syrup. I found that I ended up with one less jar than when I added water. I also now use 1/2 pint (250 ml) jars because we were wasting quite a bit because we didn’t use a whole pint of preserves quickly enough once a jar was opened.  […]