Before the modern era of year-round food, people ate more seasonally. Fresh foods were available in late spring, summer and early autumn.

Unlike other nuts like almonds and cashews that must be deshelled before salted and roasted, matured pistachios split the shells they grow in, leaving an opening exposing the edible piece that awaits.

A few are sold fresh off the tree, still full of moisture and in their shell ... in UK-produced food and the push to grow more trees. The Kent cobnut, a distinctive oval nut, is traditionally ...