Given ingredients, a kitchen and equipment, all that is left is some time, and with a well-stocked pantry that time can be about the same as driving to Burger King and back.

有了配料，厨房与装备，其他所需的就是一些时间了，如果储备充足，时间就与驾车往返汉堡王的时间相仿。

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Which makes sense, given the ingredients used to preserve and give them their color are derived from petrochemicals and butane.

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Chef Clyde Nelson describes his cooking as "innovative Western, " an eclectic style that often features local ingredients given haute preparations (pan-seared tournedos of bison with a porcini demi-glace, for instance).

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Before that could happen in a useful way, however, cells would have to be given the machinery to make the ingredients themselves, rather than being spoon-fed them, as Dr Hirao and Dr Yokoyama have done.

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