Bicerin

Bicerin is documented in Turin from the 18th century as a refinement of the bavareisa, a then-fashionable drink of coffee, chocolate, milk and syrup served mixed in a large glass. The decisive change was to keep the components in separate layers in a small glass; this innovation is traditionally credited to Caffè Al Bicerin, opened on Piazza della Consolata in 1763 and still serving the drink today. Both Camillo Cavour and the writer Alexandre Dumas are said to have been devotees, Dumas praising it in his Grand Dictionnaire de cuisine around 1852. In 2001 the Piedmont Region entered bicerin into its register of Traditional Agri-food Products, published in the regional official bulletin on 7 March 2001.

Served piping hot in a small glass, bicerin reaches the lips warm rather than scalding, around 60 degrees Celsius. The first sip pulls cool frothed milk through the bitter espresso; the spoon-thick chocolate waits at the bottom, sweet and almost pudding-dense. Drunk without stirring, it shifts from milky and mild at the top to intensely bitter-sweet and coating at the base, the chocolate clinging to the glass. The mouthfeel runs from airy foam to syrupy chocolate in a single small cup.

The three layers hold because of a density gradient. The bottom layer is melted dark chocolate enriched with sugar, the most concentrated and heaviest of the three, so it settles and stays. Espresso, watery by comparison, rests above it, and a low-density cap of frothed milk or lightly whipped cream — full of air — floats on top. Pouring gently down the side of the glass, rather than stirring, preserves the strata: stirring would collapse the gradient into a uniform mocha. The chocolate is warmed only to melt and flow, not boiled, and the drink is served hot but drinkable, near 60 degrees Celsius, so the foam stays intact and the layers remain legible to the eye.