Horses are surely just as non-kosher as pigs?

Meanwhile, the horse-derived protein additive, which came from the Netherlands, it seems, appears to have been contaminated with some nasty medicine or stimulant given to racehorses, which isn't necessarily safe for humans at all. (Or so I read in the more sensational British tabloids; perhaps a grain of salt may be needed.)

As far as I remember, Lidl and Aldi had a tiny trace of horsemeat, a fraction of 1%, in their burgers, whereas Tesco had something up to 30%.