Scones are a centuries-old tradition in Great Britain, where they've been enjoyed in one form or another since at least the 1500s. England, Scotland, Ireland, and Wales all have their own versions of this simple breakfast and teatime treat, which has evolved from a very plain mixture of barley or oats and water cooked on a griddle to its current much more elegant baked incarnation. The modern British scone (pronounced "sgonn," rhymes with gone) is made with white flour, sugar, a leavener, butter, and milk. Similar to American biscuits (though less rich), it's classically served with raspberry or strawberry jam and thickened cream (Clotted Cream or Double Devon Cream).
The American-style scone (rhymes with stone) features a greater variety of ingredients than its British cousin. Often enriched with egg, augmented with butter and/or heavy cream, and studded with anything from toasted nuts to chocolate chips, the American scone is an eclectic hybrid of biscuit, soft cookie, and cake. Topped with sugar, glazed with icing, and/or served with additional butter and jam, American scones have definitely forged their own New World path.