To celebrate 100 years since Elizabeth David CBE was born I have taken one of her recipes and adapted it for the thermal cooker. Elizabeth David has been the inspiration of many of our chefs today and influenced many home cooks with articles and books about European cuisines and traditional British dishes.
The savory crumble mixture in this recipe can be used on anything that would normally have a potato topping. The important thing with the crumble is not to over work it or it will become a gooey mass rather than like breadcrumbs.
You should find that 2.4L of water will just creep up the side of the top pot by about 1 cm when in place. You may need to adjust the amount slightly especially if you are not using a Mr D's Thermal Cooker.