The Moroccan tagine is a stew named after the conical earthenware vessel in which it’s traditionally prepared, but it’s more of a concept than a dish, really, embracing everything from courgettes to camel hump. As devoted Archers fans will recall, the tagine itself, as much a portable oven as a pot, is not the easiest thing to store, so Jennifer Aldridge may be relieved to hear that, according to...