Aronia Berry Preserves with Thai Basil and Palm Sugar

I’ll Confess I’d never heard of Aronia berries until a bunch of them showed up in our CSA box in Lincoln, Nebraska, last fall. I tasted one raw, an astringent, underripepersimmon-esque mistake. I looked them up—what are these strange deep-purple, almost black berries?—and learned that they’re also known as chokeberries, for reasons that were obvious, and are a distant relation to chokecherries. My neighbor had no idea what to do with hers, either, so we pooled our shares to ma