Red Onion + Lemon = Chemistry
There is something beautiful about how a simple onion can change so completely.
With just lemon juice, a little salt, and (optionally) a touch of honey, the sharpness softens, the color deepens, and the whole thing becomes brighter somehow — vivid, pink, alive. It feels less like a recipe and more like a small transformation.
These lemon-pickled red onions are one of those quiet kitchen things that ask for very little, yet give so much back. They bring freshness, acidity, sweetness, and that small spark that makes a dish feel finished.
A small note on red onions
Red onions carry more than flavour. Their colour comes from anthocyanins, and like other onions they contain quercetin and sulphur compounds — the kinds of plant chemicals that make them interesting not only in the kitchen, but in the body too. They also contain prebiotic fibres that can help feed the gut.
I love that they grow in a way that feels almost poetic as well. First the plant gives its energy to roots and green leaves, and only when the days are long enough does the bulb begin to form. What we eat is really a response to light — a slow swelling, built by time, season, and sun.
What to use them for
I love having a jar of these in the fridge for the moments when food needs contrast, brightness, and a little life. They work beautifully over salads, tucked into sandwiches, on toast with labneh or avocado, alongside grilled fish or roasted vegetables, and anywhere you want something sharp, soft, and vibrant at once.
They’re the kind of small thing that can wake up an entire plate.
@adrianleversby Red Onion + Lemon = Chemistry. Recipe: 1 red onion, thinly sliced 1 lemon, juiced A pinch of salt Slice, salt, squeeze, mix. Let sit for 15 minutes. (Some honey/sugar is options for extra sweetness) Scale up as needed. Two ordinary ingredients. One quiet transformation. When citric acid meets the anthocyanins in a red onion, colour shifts from purple to electric pink — no heat, no technique, just time and contact. Sometimes the most beautiful things in cooking are the simplest. #pickled #veggies
♬ original lyd - Adrian Leversby
Lemon-Pickled Red Onions
Ingredients
- 3 red onions, thinly sliced
- Juice of 1-2 lemons
- ½–1 tsp salt
- A little honey
Method
Slice the onions thinly and place them in a bowl. Add the salt, lemon juice, and a little honey. Mix well, making sure everything is coated, then let them sit for at least 15 minutes.
As they rest, the onions turn bright pink, soften, and lose their harsh edge.
Transfer them to a clean glass jar with a lid and store in the refrigerator. They’re best enjoyed within a few weeks, though they can often keep well for longer when kept chilled and covered.
Simple, vibrant, and full of life.
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