Put 50 grams red lentils, washed and drained in a pan with pinch turmeric and 200 millilitres water. Bring to the boil, reduce the heat to low and simmer for about 20 minutes, or until the lentils are soft. Set aside to cool. Once cooled, use immediately, or cover and set aside in the fridge for up to 2 days.
In a frying pan or curry pan, add 80 millilitres curry broth, 1 teaspoon garlic ginger paste, 1 teaspoon tomato puree, 1/4 teaspoon mild red chilli powder, 1 teaspoon dried fenugreek leaves (methi), pinch sea salt and 1 small handful fresh coriander leaves, finely chopped. Bring to the boil. Add 8-9 pieces slow cooked lamb for Indian curry dishes and another 80 millilitres curry broth. Simmer for 2 minutes.
Add 2 tablespoons pineapple juice, 40 grams pineapple, roughly chopped (1 average ring of pineapple from a tin) and the remaining 80 millilitres curry broth. Mix well and simmer for 1 minute. Add 1 teaspoon fresh lemon juice or lemon dressing.
Transfer the lamb dansak curry to a serving bowl and finish with a little more fresh coriander. Serve with your favourite Indian rice and breads.