The best places to find some of the more unusual varieties of eggplant are farm stands and farmers’ markets in mid-late summer. Having said this, I have been impressed lately with the different varieties of eggplant that my local, conventional grocery store carries. So, be on the lookout and ask your retail produce vendors. But also keep in mind that this particular recipe and cooking technique will work with almost any variety of eggplant. You may just need to cut it down into small slices or strips.