This is a classic Canadian recipe. Simple and delicious. It's not thick, like pectin-based jams, but I think it's truer to the fruit and more delicious. Try it with Recipe #62942 - perfect pairing. ETA: Many people have asked me why this recipe contains butter. The butter prevents the jam from foaming while you're cooking it - the foam is unattractive and spoils the appearance of the jam. Adding a little butter eliminates this problem.