If you have never had jicama, go to the store now and get some. It is crispy and delicious – perfect for a low fat slaw (yes, adults out there, I am listening). Where is it and what does it look like? In the produce aisle -- a little bigger than a grapefruit with a thin brown skin. It is light and refreshing side dish on its own, but the crunch factor transforms the southwestern portabella burger to a whole new level.