It is tough to say which method is best. In terms of processing – centrifuge method has interferes least with raw coconut meat. Thus in some sense it is closest to a coconut. Other two involve chemical and physical intervention and thus their taste and aroma also becomes different.
Read more: http://www.thesuperfoods.net/coconut/methods-to-make-virgin-coconut-oil#ixzz4FVBDyIwv