Tepache
In Guadalajara and markets across central Mexico, tepacheros sell this drink from big clay jars, ladled over ice into bags with a straw on hot afternoons. It is the thrifty drink of the house: the peel and core left after eating a pineapple are fermented for two or three days with piloncillo, cinnamon and cloves until the liquid turns golden, faintly fizzy and pleasantly sour, like a spiced pineapple cider. Wild yeasts from the peel do the work, so it makes a trace of alcohol, well under 1% when drunk young; the longer it sits, the sourer and more alcoholic it gets. The common mistake is leaving it too long in a warm kitchen, when it turns vinegary and cloudy; in hot weather check after 36 hours. It is ready when it has a layer of fine bubbles, smells sweet-sour and fruity, and tastes tart rather than syrupy. White, flat foam can be skimmed; fuzzy, coloured mould, a slimy texture or a rotten smell mean throw it away. Keep it in the fridge 3–5 days, and if you bottle it for fizz, burp the bottles daily so pressure cannot build. Chef's tip: use an organic pineapple and do not scrub the peel, as the yeasts live on its skin.
























