Meat, that is.
The idea of synthetic meat has been around for a long time. In 1932, Winston Churchill stated, "Fifty years hence, we shall escape the absurdity of growing a whole chicken in order to eat the breast or wing, by growing these parts separately under a suitable medium." But fake meat, aka schmeat or in-vitro meat, is one of those ideas that, like lunar colonies, fusion power and flying cars, has yet to cross the threshold between fantasy and reality.
But this Guardian article suggests that the time is close approaching.