5: When the Jerusalem artichokes are well cooked and soft, drain them (you can keep the milk to use in another savoury recipe).
6: Transfer to a high-sided container and blend. You could also purée them with a vegetable mill.
7: Put the purée in a saucepan. If it is too stiff, add a little of the milk from cooking.
8: Pour 2 tablespoons olive oil into a frying pan on medium heat. When good and hot, add the spring onion. salt lightly, then cook for 1 minute. Transfer onto a plate and set aside.
9: Using the same pan, still on medium heat, add the shredded leek (add a little more oil if necessary).
10: Cook until just tender, then salt and transfer onto a plate.
11: Still using the same pan, fry the diced meat to your liking (here too add a little more oil if necessary).
12: Add the meat, leeks and spring onion to the purée and mix well. Check the seasoning and your purée is ready.