To prepare the casserole first allow 1 kg lamb shoulder, cubed, to reach room temperature. Preheat your oven to 150 C.
In a dry saute pan, heat 1 tbsp whole cumin seeds until they begin to brown and pop. Transfer to a mortar and pestle and grind into a coarse powder. Set aside.
Add 1 tbsp sunflower oil to the hot saute pan and gently cook 1 large onion, finely chopped, for a few minutes, until it begins to soften.
Add 2 cloves garlic, finely chopped, the ground cumin and 2 tbsp tomato puree and cook for a further minute or so.
Season 25 grams plain flour with smoked sea salt and freshly ground black pepper and toss in the lamb pieces until coated.
Add to the onions and brown for five minutes or so.
Add 300 ml lamb stock, bring to the boil and then transfer to a casserole dish.
Slow cook in the centre of the oven for 2.5 - 3 hours.
for the creamy herbed polenta
Melt 50 grams butter over a medium-high heat in a saucepan until it begins to bubble.
Add 4 spring onions, finely chopped, and cook for two minutes, stirring occasionally.
Add 250 ml double cream and bring to a simmer, but don't allow it to boil.
Add 1 handful mixed spring herbs, finely chopped, and set aside.
Meanwhile, bring 1 litre boiling water and 2 tsp Shetland sea salt to a boil.
Gently add 300 grams coarse polenta to the boiling salted water in a stream, stirring constantly. It will thicken fairly quickly.
Continue to stir, cooking for two minutes or so until it resembles thick porridge.
Remove from the heat, add the herbed cream mixture and 50 grams Parmesan cheese and stir well.
Serve immediately with the slow-cooked lamb casserole on the side.
Notes
Any leftover polenta can be transferred to a dish to set. It will take the shape of whatever dish you put it in when it has cooled, and you can slice and fry it to reheat it. This will go well with any leftover casserole!