1 - step 1 Wash the wild garlic leaves well in a colander, then pour over boiling water from the kettle until just wilted.

2 - Immediately rinse under cold running water, then squeeze out the excess water and finely chop.

3 - step 2 Warm the milk in a pan over a low heat until just steaming.

4 - Heat the oil or butter in a second pan and, once warm or melted, stir in the flour for a couple of minutes until it starts to brown a little.

5 - Gradually add the warm milk, a little at a time, until you have a thick, silky sauce.