http://ecx.images-amazon.com/images/I/214iDx53WUL.jpg
We use a "mango slicer". Looks like an apple cutter. I have one made by OXO. It has larger handles and grips which makes it easier to use. The picture is off of Amazon but mine was from a big box store and was less than the price listed on Amazon.
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Zack, Zeke, Zoey, Zipp RIP 6/28/12