Mashed Sweet Potatoes, Great for Purple Sweet Potatoes

Boil or roast sweet potatoes, and mash until smooth.  

Make flavored syrup:

6 to 8 oz. pineapple juice (or orange)

Brown Sugar and/or Honey
Star Anise (about 3) 

Fresh Ginger or Crystalized Ginger

Maybe some cinnamon and/or nutmeg
(or use Japanese 5-spice powder in lieu of the other spices)

Cook down until syrupy. Remove solids.
Add a little butter. Stir into your warm mashed sweet potatoes. Yum!

Purple sweet potatoes are denser than orange ones, and not quite as sweet with a mealier texture. They are best when boiled or roasted and then mashed with a flavoring syrup recommended by my sister. It would be delicious with any variety of sweet potatoes. For lots more information about purple sweet potatoes, and the different varieties look here.