Re:Soda May Age You as Much as Smoking
by hrjet on Tuesday October 21, 2014 @10:40PM
(#8491284)
Yam, jam and sweet potatoes are three different things. See for example: http://homecooking.about.com/od/howtocookvegetables/a/sweetp...
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In most parts of the US a sweet potato with soft orange insides is correctly called a "Yam" to differentiate it from the sweet potatoes with firm yellow insides.
Either name isn't great; it's neither closely related to the african yam, nor the common potato.