Jalapeño and Serrano Hot Sauce

Ingredients

• 15 jalapeños
• 5 serrano chiles
• 3 garlic cloves
• 1 tbsp kosher salt
• 2 cups white vinegar

Method

Char the jalapeños and serranos under a hot grill or directly over a gas flame until the skin blackens and blisters across 80 per cent of the surface — roughly 4–5 minutes. This chilli preparation step matters: the heat drives off volatile compounds that taste green and raw, replacing them with deeper, roasted notes. Charring also loosens the skin, which you'll rub away under running water (the flesh stays intact). Peel the garlic cloves and crush them lightly with the flat of your knife.

Pulse the charred peppers, garlic, and kosher salt in a food-processor-cooking|food processor until the texture resembles wet sand with visible flecks — not a purée yet. This matters: uneven chopping means some pieces will soften and dissolve during the boil while others stay firm, giving you an uneven mouthfeel. With the motor running, stream the white vinegar in slowly. The acid-in-cooking|acetic acid denatures the peppers' cell walls, and the mechanical action breaks them down further. Process until completely smooth, roughly 90 seconds of continuous running.

Transfer to a medium saucepan and bring to a rolling boiling|boil over medium-high heat. Maintain the boil for exactly one minute — the heat pasteurises the sauce and fixes the colour, while the vinegar's volatile compounds drive off slightly, mellowing the sharpness. Remove from heat and allow to cool completely in the pan, uncovered. Don't rush this; the peppers will continue to soften as the residual heat works.

Once cool, decant into a sterilised glass jar with an airtight lid and leave in a cool, dark cupboard for three days. The fermented-condiments|fermentation period is optional but worthwhile — even without active cultures, the vinegar's acidity stabilises the sauce and the flavours marry and deepen. After three days, strain through a fine mesh sieve into a bowl, pressing hard on the solids to extract every drop of liquid. This separated sauce keeps in the fridge for up to six months. Don't discard the solids: that fibrous residue becomes an excellent condiment|chilli relish or paste — stir a teaspoon into yoghurt, mayo, or beans.