In his latest book, Heston Blumenthal At Home, the three Michelin-starred chef attempts to lay bare his thought processes, without recourse to the epic commands contained in his seminal 532- page Big Fat Duck Cookbook of three years ago. Here's a recipe from Heston Blumenthal At Home.

Heston Blumenthal At Home (Bloomsbury, £30)

Serves four
110g tomato ketchup
100g mayonnaise
1/4tsp cayenne pepper
Worcestershire sauce, 12 drops
10g lemon juice
Salt and black pepper
400g cooked shelled prawns
1 iceberg lettuce, finely shredded
1 avocado, peeled and diced

METHOD

Combine the tomato ketchup, mayonnaise, cayenne pepper, Worcestershire sauce and lemon juice in a bowl and mix thoroughly. Season with salt and freshly ground pepper.

Add the prawns to the sauce and stir to coat.

Place the shredded lettuce on the bottom of four glasses or glass bowls, followed by the diced avocado, and then a generous spoonful of prawns and sauce.