this is a separated detailed post juz about purple yam. there are other posts about yams in this blog. purple yam, as the name suggests, it stands out with its bright attractive purple colour flesh. other than the flesh colour, purple yam differs in its skin - a real bark-like skin, looks like a segment of tree trunk. the diameter reaches about 10cm for most pieces the colour of the flesh would range from pale pink-purple to bright purple. in my experiences, thinner pieces will have a darker flesh colour but the colour may depend on the freshness also. as with other purple colour vegetables, their colour may lose a bit after cooking because the colour pigments will leach into the water. they don't have the sweet aroma of their white relative (white yam), but they have the same slimy texture. cooked purple yams taste similar to the white yams, the difference is that it has a firmer texture, which I think is similar to that of chestnuts. that was quite out of my exp...