I should make this more often. I like it,and it uses yogurt which I make myself, often having a surplus. It comes from Healthy Living. I often use commercial breadcrumbs, for speed. If, like me, you find washing leeks a chore, slice them down the length of the leek through to the centre, then slice them again into rings. Shove them into a sink full of water and swish. The rings seperate into strips, making sure all the soil is easily removed.