The Ultimate Roast Lamb Feast: A Sunday Lunch to Remember

Few meals capture the essence of British dining quite like a Sunday roast. And when Salt Marsh Lamb is at the heart of it, you know you’re in for something exceptional. With its naturally sweet, herbaceous flavour and meltingly tender texture, this is lamb at its finest.

In this guide, we’ll show you how to create the perfect roast lamb dinner, complete with crispy duck fat roast potatoes, minted pea purée, and a rich red wine and shallot gravy. Whether it’s a family gathering or a special occasion, this is a meal designed to impress.

Why Choose Salt Marsh Lamb?

At TJB, we take pride in sourcing only the finest cuts, and Salt Marsh Lamb is a true British delicacy. Raised on the boggy marshes, these lambs graze on a natural diet of herbs and wild grasses, which results in unparalleled flavour and tenderness.

What Makes Salt Marsh Lamb Exceptional?

• Naturally Seasoned by the Sea – A unique, delicate sweetness with subtle herbaceous notes.
• Free-Range & Sustainable – Raised in open pastures, following traditional and ethical farming methods.
• Unrivalled Tenderness – Thanks to a natural diet and slow growth, the texture is second to none.

For the best quality Salt Marsh Lamb, shop directly HERE.

Now, let’s do this outstanding cut of meat justice.

Garlic & Rosemary Roast Leg of Salt Marsh Lamb

Ingredients:

• 2kg Salt Marsh Leg of Lamb
• 6 cloves garlic, sliced
• 3 sprigs rosemary
• 2 tbsp olive oil
• 1 tsp sea salt
• ½ tsp black pepper
• 1 tsp Dijon mustard (optional)

Method:

1. Preheat oven to 160°C (140°C fan).
2. Using a sharp knife, make small incisions in the lamb and insert garlic slices and rosemary sprigs.
3. Massage the lamb with olive oil, salt, pepper, and Dijon mustard.
4. Place in a roasting tray, cover with foil, and slow roast for 4 hours, basting every hour.
5. For the final 30 minutes, remove the foil, increase the oven to 200°C, and allow the lamb to develop a rich, golden crust.
6. Rest for 20 minutes before carving—this ensures maximum tenderness and juiciness.

🔗 Order your Salt Marsh Lamb Leg here.

Crispy Duck Fat Roast Potatoes

The perfect roast deserves the perfect potatoes. These crispy, golden roasties are made even better with duck fat, creating that irresistible crunch.

Ingredients:

• 1.5kg Organic bakers potatoes, peeled and cut into large chunks
• 4 tbsp Duck Fat
• 1 tsp sea salt
• ½ tsp black pepper
• 1 tbsp semolina (for extra crunch)

Method:

1. Preheat oven to 220°C (200°C fan).
2. Boil potatoes in salted water for 10 minutes until just fork-tender.
3. Drain and shake in the pan to rough up the edges.
4. Toss the potatoes in hot duck fat, season well, and roast for 45 minutes, turning halfway.
5. Finish with a sprinkle of sea salt before serving.

Minted Pea Purée

A refreshing contrast to the richness of the lamb, this simple minted pea purée adds a vibrant, herbaceous touch.

Ingredients:

• 250g frozen peas
• 10 fresh mint leaves
• 1 tbsp butter
• 2 tbsp crème fraîche
• Juice of ½ lemon
• Salt & pepper to taste

Method:

1. Boil peas for 3 minutes, then drain.
2. Blitz with mint, butter, crème fraîche, and lemon juice until smooth.
3. Season to taste and serve warm.

🌿 Prefer a chunky texture? Simply mash with a fork instead of blending.

Red Wine & Shallot Gravy

A good gravy ties everything together, and this one—infused with red wine and shallots—adds the perfect depth of flavour.

Ingredients:

• 2 shallots, finely chopped
• 250ml red wine
• 500ml beef or lamb stock
• 1 tbsp flour
• 1 tbsp butter
• 1 tsp Worcestershire sauce

Method:

1. Melt butter in a pan, then soften the shallots.
2. Stir in flour and cook for 1 minute before adding red wine. Reduce by half.
3. Add stock and Worcestershire sauce, then simmer for 10 minutes until thick and glossy.

🔥 For extra richness, stir in the lamb’s pan juices before serving.

Time to Serve

Now, all that’s left to do is carve your perfectly roasted Salt Marsh Lamb, plate up those golden, crispy potatoes, add a dollop of minted pea purée, and pour over that rich red wine gravy.

This is Sunday lunch, done right—a meal built on exceptional British ingredients, expertly prepared.

🔗 Order your Salt Marsh Lamb and premium butchery essentials from Thomas Joseph Butchery.

Here’s to exceptional meat, always.