Why Hay-Roasted Lamb Might Be the Most Fragrant Roast You’ll Cook This Spring
Does anything say spring quite like a succulent roasted leg of lamb?
Recently I watched James Martin cook a leg of lamb on a bed of hay, scattered with rosemary, olive oil and a little salt and pepper. The idea seemed almost theatrical at first — hay in the oven? — but the more I thought about it, the more curious I became.
So of course I went all in.
The method is surprisingly simple: a layer of hay and rosemary underneath the lamb, a little more hay on top, then everything loosely covered and roasted slowly in the oven. The result? A roast that smells like a summer meadow and tastes subtly smoky, herbal and deeply savoury.
But hay roasting isn’t just a quirky cooking trick. It’s an old countryside technique that produces some genuinely fantastic results.
What Is Hay Roasting?
Hay roasting is a traditional method of cooking meat slowly while surrounded by dried hay. As the hay heats up, it releases a gentle grassy aroma that perfumes the meat without overpowering it.
The hay doesn’t burn — because the dish is covered and the oven temperature is moderate — but it does toast slightly, creating a delicate smokiness.
The result is something that tastes rustic, comforting and unmistakably seasonal.
It’s the kind of dish you imagine being cooked in a farmhouse kitchen somewhere in the countryside, and yet it works perfectly well in a modern oven.
Why Cook Lamb on Hay?
There are a few reasons chefs love this method:
1. Incredible aroma
Hay releases sweet, grassy notes that pair beautifully with lamb.
2. Gentle insulation
The hay acts almost like a natural blanket, helping the lamb cook evenly and stay juicy.
3. Perfect pairing with herbs
Rosemary, thyme and garlic work beautifully with the subtle meadow-like flavour the hay creates.
4. It looks impressive
When you lift the foil and reveal the lamb sitting on toasted hay, it feels wonderfully theatrical.
It Works Brilliantly With Chicken Too
Once you try hay roasting, you quickly realise it’s not just for lamb.
Chicken cooked on hay is particularly good. The mild flavour of the bird absorbs the grassy aroma beautifully, especially when combined with garlic, lemon and herbs.
It’s also an excellent way to cook a whole chicken slowly while keeping the meat incredibly moist.
Hay-Roasted Leg of Lamb with Rosemary
Ingredients
- 1 leg of lamb (about 2–2.5kg)
- 2 large handfuls of clean cooking hay
- 4–5 sprigs fresh rosemary
- 3 tbsp olive oil
- Sea salt
- Freshly ground black pepper
(Food-grade cooking hay can be bought online or from farm shops.)
Method
- Preheat the oven to 180°C.
- Prepare a roasting tray by spreading a generous layer of hay across the bottom.
- Scatter the rosemary sprigs over the hay.
- Place the leg of lamb on top.
- Drizzle the lamb with olive oil, then season well with salt and pepper.
- Add another small handful of hay loosely over the lamb.
- Cover the roasting tray tightly with foil.
- Roast for 1 hour covered.
- Remove the foil and continue roasting for another hour uncovered to allow the lamb to brown.
- Once cooked, rest the lamb for 15–20 minutes before carving.
What to Serve With It
Hay-roasted lamb pairs beautifully with simple spring sides:
- New potatoes with butter and mint
- Honey-roasted carrots
- Tenderstem broccoli
- A simple red wine gravy
The lamb itself carries so much flavour that the sides don’t need to be complicated.
Is It Worth Trying?
Absolutely.
Hay roasting might sound unusual, but it’s one of those techniques that reminds you how powerful simple ingredients can be. A little hay, a few herbs and a good piece of lamb are all it takes to create something memorable.
And if nothing else, it’s a wonderful excuse to cook a roast that smells like spring itself.
Explore more with Crave, your lifestyle magazine in the UK for food, wellbeing and travel inspiration.