I have made strawberry jam several times with the regular certo
pectin. Since the jam is usually too sweet for me, I decided to use
Certo light this time.

Well the jams didn't gel, the mixture is runny. I used 6 cups
strawberries, 4.5 cups sugar and a box of pectin as per instructions.

So, my question is, what on earth did I do wrong? And secondly, the
runny mixture is quite good, it would make a good sauce, will it go
bad or should I keep it in the fridge/freezer?