To make this McGee Drink fill an old fashioned glass to the two-thirds line with cracked ice. Slosh dry sherry into glass. Swiftly, with strainer across top of glass, dump the sherry. Fill to the ice level with Plymouth Gin (imported). Rub lemon peel around inside of rim, pinch some floating beads of citrus oil on the surface of the drink. Throw away the peel.