Igniting Cough Drops
Violent candies: It’s not about the taste, but about the action. Pop Rocks explode in your mouth. Extreme Sours of all sorts burn the skin off your cheeks. Wintergreen Lifesavers emit sparks when chomped in the dark. Dear candy, don’t just sit there; DO SOMETHING!
How delightful it must have been for whoever discovered the igniting cough drop, back in 1913. One typically seeks such medicated confection for its soothing, cooling properties. One does not expect pyrotechnics.
A popular cough lozenge ingredient in the day was chlorate of potash; mixed up with a little sugar, it promised a tasty and effective treatment for respiratory discomfort. But when you rubbed the lozenge on the igniting strip of a safety-match box, watch out! The lozenge would light up like a match and burn.
It’s a cough drop. No, it’s a match. No, it’s a cough drop AND a match!
Confectioners Journal called it “killing two birds with one stone.” One wonders how it could have been as tasty as claimed. Of course, in 1913 those chalky Necco-style wafers were popular, too.
Source: “Killing Two Birds With One Stone” Confectioners Journal, Jan. 1914 p. 93
More: Chemistry expert Anne Marie Helmenstine explains Candy Triboluminescence (those sparks from Wintergreen Lifesavers).