So it’s in Great Britain, the place Fearnley-Whittingstall lives, in addition to in Australia and New Zealand, the two top lamb-exporting countries on the earth. Even in the United States, where most lambs are fed corn to fatten them up before slaughter, they nonetheless have spent most of their lives consuming grass. Often served with an acidic accompaniment to counteract the richness and minerality of the meat they’re an excellent ‘gateway’ offal for purchasers that want to get a bit adventurous.