Here is an extravagant salad for a celebratory dinner that need not break the bank. Your guests will be thrilled by its flavour and presentation. You will need to start two days ahead of time.
To start to prepare the mayonnaise, put the truffle and whole eggs in a container with a tight-fitting lid and seal, then refrigerate for 2 days before you wish to serve.
On the day the salad is to be served, prick 1 of the eggs with a fine pin and lower it into a saucepan of boiling water, then boil for 10 minutes. Drain and refresh it under cold running water