Pineapple Jam with Chinese Five-Spice

This is one sweet jam (and many other recipes for pineapple preserves use even more sugar than this!), but pineapple itself is intensely so, and this is one instance where I actually prefer an almost caramelized flavor. The savory five-spice tones down the brightness a bit, and the jam becomes a deep caramel color as it reduces. Besides the obvious uses (on banana splits, for example, or in a pork marinade cut with some cider vinegar and cayenne), having a jar of it on hand brings you at le