Does anyone here is able to get sweet potato, purple (inside), white skin in mainland USA? Is there a place you can buy online? not sure about the shelf life?
You could try Melissa's Produce online. http://www.melissas.com/Products/Produc ... atoes.aspx
You'd have to see if they have any available. The shelf life isn't real long. This site also has them (pricey): http://www.24hourbestbuy.com/okswpo.html
There's also this one http://www.sidwainer.com/shopexd.asp?id=934
but the price is pretty insane. $6.99/lb?
Did I read that right?
Anyway, I've never bought anything from any of them, but I've seen Melissa's Produce online for quite some time.