UK

Lemon Curd Sandwich

Cooked from yolk, sugar, butter and lemon, the curd sets into a sliceable, sour-first band on buttered white bread. Elizabeth Raffald printed its recipe in 1769; the word curd waited until 1844.

Jam Sandwich

Butter out to the crusts, jam on the butter, and the bread survives until lunch. The thrift sweet of the English lunchbox: dinner in the 1913 Lambeth budgets, so common the police car took its name.