Raspberries are one of my favourite fruits. The luminous pink colour and tart flavour work so well in many desserts. Jam is a wonderful way to concentrate that juicy raspberry flavour so you can enjoy it anytime. My ultimate is spreading it onto a warm and crispy buttered croissant. Compared to a jelly, which is a transparent gel made of fruit juice and sugar, jam generally has chunks of fruit and is more spreadable. To classify as a jam, the finished product must contain 60% sugar. Yes, it's a lot! The sugar doesn't only sweeten the jam though, it also assists...