A proper Thai salad is not a bowl of leaves with a dressing poured over it. It is a balancing act — cool against hot, soft against crunchy, and a dressing that hits sour, salty, sweet and hot all at once. This warm beef salad takes that idea and runs with it: a piece of steak seared hard, rested, sliced thin, and laid over cucumber, tomato and a heap of fresh herbs, with a lime and chilli dressing sharp enough to wake everything up.

It comes together in about half an hour once you have the ingredients in front of you. Most of that time is resting and chopping, not cooking.

Choosing and Cooking the Beef

You want a cut with some flavour and a bit of chew, not something so lean it turns to sawdust. Rump, sirloin or a well-trimmed ribeye all work well. Something around 2cm thick is ideal — thick enough to get a proper crust without overcooking the middle, thin enough to cook quickly in a screaming hot pan.

• Take the steak out of the fridge 30 minutes ahead. Cold meat in a hot pan steams rather than sears.
• Pat it dry and season generously with salt only. Pepper will burn and turn bitter at the heat you need.
• Get the pan properly hot. A heavy frying pan or a griddle pan over high heat, with a thin film of neutral oil. Wait until it just begins to shimmer.
• Cook 2–3 minutes per side for medium rare. Resist moving it around. You are after a dark crust and a pink centre.
• Rest it for at least 8 minutes on a board, loosely covered. This matters more than the cooking.

Once rested, slice it as thinly as you can against the grain. If you slice with the grain you will be chewing for a long time. A sharp knife and a slight angle on the blade will get you there.

The Dressing: Balance Before Heat

Thai dressings are built on four notes, and the trick is tasting as you go rather than following a recipe blindly. Limes vary enormously in acidity, and fish sauces vary in saltiness, so adjust.

• 2 tablespoons fresh lime juice — squeeze it fresh, bottled juice tastes flat and metallic
• 1½ tablespoons fish sauce
• 1 teaspoon palm sugar, grated or shaved so it dissolves (soft brown sugar works at a push)
• 1–2 bird's eye chillies, finely sliced — seeds and all if you want proper heat
• 1 small garlic clove, crushed to a paste
• 1 tablespoon water to loosen it, if it tastes too concentrated

Whisk everything in a small bowl or shake it in a jam jar until the sugar has disappeared. Taste it on a piece of cucumber, not on your finger. It should be sharp, salty and only faintly sweet, with the chilli arriving a second later. If it tastes harsh, a little more sugar will round it out. If it tastes flat, more lime.

The Herbs and Vegetables That Matter

This is where the dish lives or dies. Supermarket herb packs sold as "Thai basil" are often ordinary basil, and they will not give you the same aniseed punch. If you can get to an Asian grocer, it is worth the trip.

• Cucumber — a whole one, peeled in stripes, halved, seeded and sliced on the diagonal
• Cherry tomatoes — halved, at room temperature so they actually taste of something
• Red shallots — two, sliced paper-thin and soaked in cold water for ten minutes to take the raw edge off
• Coriander — a generous handful, stalks included, roughly chopped
• Mint leaves — a good handful, left whole where they are small
• Thai basil — a handful, torn rather than chopped
• Spring onions — two, sliced on the sharp diagonal
• Toasted rice powder — optional but transformative, see below

To make toasted rice powder, dry-fry a tablespoon of uncooked jasmine rice in a pan over medium heat for 4–5 minutes until it turns deep golden and smells nutty. Cool it, then grind it coarsely in a pestle and mortar or spice grinder. It adds a sandy texture and a toasted aroma that lifts the whole salad.

Assembling It at the Last Minute

Timing is everything here. Dress the beef while it is still warm, and keep the vegetables undressed until the moment of serving.

Toss the sliced steak with about half the dressing in a bowl and let it sit for two minutes. In a larger bowl, combine the cucumber, tomatoes, shallots, spring onions and herbs. Add the beef and its dressing, pour over the rest, and toss gently with your hands or two spoons — you want everything coated, not bruised. Finish with a dusting of toasted rice powder.

What to Serve With It

Sticky rice is the traditional partner and the best one: pinch a small ball and use it to scoop up the salad. Plain jasmine rice works too, or nothing at all if you are eating it as a light supper.

The formula is forgiving. Swap the beef for sliced duck breast, grilled pork neck, or briefly seared prawns. Add finely sliced lemongrass, a few strips of mango, or some roasted peanuts for crunch. What you should not do is dress it in advance — the herbs will wilt and the cucumber will weep, and you will lose the contrast that makes it worth eating in the first place.

Any leftovers will keep in the fridge overnight, though the texture will soften. Better to eat it all while the steak is still faintly warm and the herbs still smell of themselves.