I've made mine without, and I've used Granny Smith apples. Both work well for the salsa.. For the Cool & Crunchy Chicken Tacos/Salad- I used the apple.BUT, my host on Saturday had found the jicama at a Food Lion! (To me, it's like the "lowest" grocery store in our area for selection. I was then able to find it at a Food Lion near me as well. I haven't tried my other stores....I've asked at most of them and no one knew what I was even talking about. But when I found it at Food Lion- it was in the section with the various Squash. My host said near their loose potatoes and squash. It has the shape of a large vidalia onion- but a skin like a white potato or ginger. We did learn at the show that jicama is a tougher fruit/veggie to chop - it got wedged in the blades of the MFP. But once we got it off the blades, it chopped up ok. (It was my first time using the jicama.)