cassava = casava = manioc = mandioca = tapioca root = yucca = yu

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casava

cassava = casava = manioc = mandioca = tapioca root = yucca = yucca root = yuca root = Brazilian arrowroot   Pronunciation:   kuh-SAH-vuh   Notes:   People in Hispanic countries use cassavas much like Americans use potatoes.  There's both a sweet and a bitter variety of cassava. The sweet one can be eaten raw, but the bitter one requires cooking to destroy the harmful prussic acid it contains.  It's often best to buy frozen cassava, since the fresh kind is hard to peel.  Look for it in Hispanic markets.  It doesn't store well, so use it within a day or two of purchase.   Substitutes: malanga OR dasheen OR potato (not as gluey)

Chinese artichoke = crosne = Japanese artichoke = chorogi   Notes:  These look a bit like caterpillars, and they taste like Jerusalem artichokes.  They're popular in France but hard to find in the U.S.  Your best bet would be an Asian market.    Substitutes:  Jerusalem artichoke OR salsify

Chinese potato  See arrow root or jicama.