I don't have much in the way of gustatory synesthesia, so I don't think it really counts. I convert sound (especially music), time (that's fun, let me tell you), and graphemes into a number of things, but none are taste or smell. I do have some fun ones--the graphemes are most complex, being colored, textured, gendered, and each with its own personality. And everything has its own location in what I call the "synesthesia dimension."

You're welcome to link to this, too! I'll have to figure out the amounts of everything I used and post the recipe. ;)