Chilli Oil with Crispy Shallots and Sichuan Peppercorn

Once you make your own chilli oil, the shop-bought jars start to look a bit sad. This one has everything: deep red heat from the chilli, the tingling, lip-buzzing numbness of Sichuan peppercorn, savoury depth from soy, and the thing that makes it truly addictive, a tangle of crispy fried shallots and garlic folded right through. Spoon it over noodles, dumplings, fried eggs, rice, roast vegetables, or honestly anything that needs waking up. The crispy shallots are my one small twist, and they turn a good chilli oil into one you will guard jealously.

2 The Story

Chilli oil, or la you, is a foundational condiment of Chinese cooking, and nowhere more so than in Sichuan, the south-western province famous for the bold, layered heat of its food. The chilli pepper itself is not native to China; it arrived from the Americas via trade routes only a few centuries ago, but it found a spiritual home in Sichuan, where cooks married it to a much older local ingredient: the Sichuan peppercorn. That peppercorn, the dried husk of a prickly ash berry, is not really hot at all. Instead it delivers a strange, electric tingling on the lips and tongue known as ma. Combined with the la of chilli, you get mala, the numbing-and-spicy sensation at the heart of Sichuanese cuisine.

A good chilli oil is about more than raw heat. The best versions are aromatic and complex, built by gently infusing the oil with whole spices like star anise, cinnamon and bay before it is poured, still hot, over the chilli flakes. That final pour is the crucial moment: the hot oil blooms the chilli, releasing colour and fragrance without scorching it, which would turn the whole thing bitter. Every household and every noodle stall has its own blend, and arguments about the right ratio of chilli, spice and crunch are part of the fun.

3 Method

1. Put the chilli flakes, sesame seeds, salt and sugar in a large heatproof bowl and set it nearby; you will pour the hot oil straight over this.
2. Warm the oil in a saucepan with the sliced shallots and garlic over a medium-low heat. Stir often and cook gently until they turn evenly golden and crisp. Watch them near the end, as they catch quickly. Lift them out with a slotted spoon onto kitchen paper.
3. Add the Sichuan peppercorns, star anise, cinnamon and bay leaves to the oil. Heat gently for 8 to 10 minutes to infuse, keeping it well below frying temperature, then fish out and discard the whole spices.
4. Bring the infused oil up to about 180C, when it shimmers and a chilli flake dropped in sizzles instantly. Pour it carefully over the chilli mixture in the bowl. It will foam and sizzle dramatically; stir as it settles.
5. Stir in the soy sauce, then once the oil has cooled a little, fold the crispy shallots and garlic back through.
6. Cool completely, then spoon into a sterilised jar and keep in the fridge.

4 Tips and Variations

Temperature is everything. Too cool and the chilli will not bloom; too hot and it scorches and turns acrid. If you are unsure, let the oil cool for thirty seconds off the heat before pouring. Korean gochugaru is a forgiving choice, bright red and fruity rather than fiercely hot, and it gives a gorgeous colour.

Keep the crispy shallots and garlic slightly underdone when you fry them, as they crisp further as they cool, and they will soften in the oil over time, which is no bad thing. Store the oil in the fridge and always use a clean, dry spoon. It keeps for a month or more, the flavour deepening as it sits. Stir before each use, as the good stuff settles at the bottom. A jar makes a brilliant gift, if you can bear to give it away.