Mushroom Udon Soup

This is very plain, very calming; the sort of supper I might make myself to get back on track if I’ve gone out and had pig’s trotter – fat, cartilage and all – with mashed potato for lunch.

Dashi is the Japanese stock (what brodo is to the Italians) and although you can make it yourself, I advise buying hon-dashi, which is their equivalent to stock cubes. I buy mine in liquid version which you mix in the ratio of 1