Not from any of the books, but something I wanted to make because the ingredients were to hand. Marks and Sparks have the first of the season's English asparagus (hurrah!) at an amazing £3.00 for 2 trays. I had some left over and also some lovely leeks, so it seemed logical to turn them into a soup, with a little potato to thicken. This will go down nicely for lunch at work.