I’ll be honest—when I first tackled Mary Berry’s canon of lamb, I thought I’d bitten off more than I could chew. Lamb loins? Port in gravy? Mint jelly?! It all sounded a bit chef-y for a Wednesday night. But here’s the twist: it turned out to be one of the simplest, most elegant dinners I’ve ever pulled off.
That said, my first attempt nearly flopped. I over-seared the lamb and turned the gravy into something resembling porridge (too much flour, rookie move). But once I slowed down and followed the method properly—especially the bit where you layer the lamb over rosemary—I understood the brilliance.
The result? Juicy pink lamb, infused with herby goodness, swimming in a sweet-savory gravy that’s proper Sunday lunch material. Let me show you how I fixed it.
Why This One Works So Well
Most lamb recipes stop at “roast and rest,” but this one builds serious flavour at every step.
- The rosemary bed under the lamb isn’t just for show—it gently infuses the meat as it roasts.
- The gravy’s base of onion, garlic, and port gives depth, while mint jelly adds a pop of brightness. I didn’t think it would make much difference, but without it, the whole thing tasted flat.
- And using loin fillets means the lamb cooks quickly and evenly. You get that soft pink middle without any of the stress.
Honestly? It’s fancy without the faff.
INGREDIENTS + WHY THEY MATTER
- Lamb loin fillets – Lean, tender, and quick-cooking. I once tried it with chops and it just wasn’t the same.
- Fresh rosemary – Lends a gentle aroma as the lamb roasts. Don’t skip it.
- Port – Adds richness and sweetness to the gravy. I tested with red wine—too sharp.
- Mint jelly – Balances the savoury notes. I used the chunky kind from a farm shop—game-changer.
- Butter + flour – Classic roux for thickening the gravy. Don’t rush this bit—it sets the tone.
Ingredient Swaps That Hold Up
Want to change it up? Here’s what actually worked in my kitchen:
- Gluten-free? Use a GF flour blend for the roux—Bob’s Red Mill worked fine.
- No port? Sweet sherry or Marsala is okay in a pinch, but it skews sweeter.
- Herb twist? I once swapped rosemary for thyme—it gave a woodier, more autumnal edge.
- Mint jelly swap – Homemade mint sauce is too runny. Stick with jelly unless you cook it down first.
Egg-free and dairy-free versions? I haven’t tested them yet—but I will!
MISTAKES I’VE MADE (AND HOW TO AVOID THEM)
What Went Wrong | Why It Happens | How to Fix It |
---|---|---|
Lamb turned grey | Pan wasn’t hot enough | Preheat pan until oil shimmers |
Gravy went lumpy | Added flour straight to stock | Cook flour in butter first, then whisk in stock gradually |
Too sweet gravy | Used too much port + jelly | Stick to measurements—port is strong stuff |
Lamb too tough | Overcooked by 3 minutes | Pull it out at 8 minutes and rest properly |
HOW TO MAKE MARY BERRY’S CANON OF LAMB WITH MINT GRAVY
- Preheat oven to 220°C (200°C fan)/Gas 7. Pop rosemary sprigs in a small roasting tin.
- Sear lamb – Heat oil in a frying pan until hot. Season lamb, then sear on all sides until browned—about 1-2 minutes per side.
- Roast – Place lamb on rosemary, roast for 8 minutes for medium-rare. Rest in tin (don’t skip this!).
- Start the gravy – In a saucepan, melt butter. Sauté onion and garlic for 3–4 mins until soft.
- Thicken – Stir in flour, cook 1 min. Gradually whisk in hot stock, then add port. Simmer and stir until thick.
- Flavour – Stir in mint jelly, gravy browning (optional), chopped mint, salt, and pepper. Add resting juices, simmer 1 more min.
- Strain – Pour gravy through a sieve into a warm jug. Slice lamb on the diagonal and serve with the glossy gravy.

TIPS FROM MY KITCHEN
- I always rest the lamb at least 10 minutes in the warm tin—it finishes cooking and reabsorbs juices.
- If using a fan oven, pull the lamb 1 minute early. Mine runs hot.
- I strain the gravy after tasting it—sometimes I leave in the onion bits if I want a chunkier texture.
- Add the mint jelly off heat—it keeps that zingy edge better.
STORAGE + SERVING
- Fridge: Keeps 3 days, lamb and gravy in separate containers.
- Freeze: Wrap lamb tightly, freeze gravy in a tub. Keeps 2 months. Thaw in fridge overnight.
- Reheat: Oven is best—foil-covered at 180°C for 15–20 mins. Gravy can go in a saucepan or microwave.
Perfect with buttery mash, green beans, or roasted roots.
FAQs – Real Query Answers
Q: Can I make the gravy ahead of time?
A: Yes! Make it a day ahead and reheat gently. It actually deepens in flavour overnight.
Q: What cut is canon of lamb?
A: It’s the eye of the loin—lean, tender, and shaped into a small roast. Often tied together in butchers’ shops.
Q: Can I use dried mint instead of fresh?
A: I tried once. Nope. Tastes flat and dusty. Fresh or nothing here.
Q: Is lamb supposed to be pink?
A: For this recipe—yes. Medium-rare keeps it juicy. If you like it more cooked, go 10–12 minutes.
Q: Do I need the gravy browning?
A: Optional. It’s mostly for colour. I skip it unless I’m serving to guests.
Try More Recipes:
- Mary Berry Chicken Paprika Recipe
- Mary Berry Chicken Korma
- Mary Berry Chicken Tagine
- Mary Berry Swiss Chicken, Spinach, And Mushroom Bake
Mary Berry Canon Of Lamb With Mint Gravy
Course: DinnerCuisine: BritishDifficulty: Easy4
servings10
minutes18
minutes325
kcalJuicy lamb loin with rosemary and mint gravy—quick, elegant, and full of rich flavour.
Ingredients
- For the lamb
3 long sprigs rosemary
1 tbsp oil
3 lamb loin fillets
Salt and pepper
- For the gravy
25g butter
1 small onion, finely diced
1 garlic clove, crushed
25g plain flour
450ml hot beef or chicken stock
150ml port
1 rounded tsp mint jelly
Few drops gravy browning (optional)
1 tbsp fresh mint, chopped
Salt and pepper
Directions
- Preheat oven to 220°C (200°C fan). Lay rosemary in roasting tin.
- Heat oil in a pan, season lamb, sear all sides.
- Place on rosemary and roast 8 mins. Rest in tin.
- In a saucepan, melt butter, sauté onion and garlic.
- Stir in flour, cook 1 min. Whisk in stock, add port. Simmer to thicken.
- Add mint jelly, browning (if using), chopped mint, salt, pepper. Stir in resting juices.
- Strain gravy. Slice lamb, serve with gravy.
Notes
- I always rest the lamb at least 10 minutes in the warm tin—it finishes cooking and reabsorbs juices.
- If using a fan oven, pull the lamb 1 minute early. Mine runs hot.
- I strain the gravy after tasting it—sometimes I leave in the onion bits if I want a chunkier texture.
- Add the mint jelly off heat—it keeps that zingy edge better.