Sweet Potato Lime Salad

2 large sweet potatoes or yams
2 – 3 limes (depending on how big and juicy they are)
1 tablespoon olive oil
1/3 cup chopped cilantro
pinch cayenne
sea salt

Heat oven to 425°F. Peel and cut the sweet potatoes into 1/2 inch cubes. Spread on a rimmed baking sheet, toss with a little olive oil and roast for 15 minutes or until tender. Let cool and put in a bowl. Zest one of the limes with the small holes on a box grater. Toss the sweet potatoes with the zest, juice from the limes, olive oil, cilantro, cayenne and sea salt. Taste and add more salt or cayenne if desired.