Mix the tomatoes with the sherry vinegar, basil, salt and pepper, and olive oil to make a salsa.
Chop the avocadoes into cubes, add the lime juice and the seasoning (chilli powder).
Make a white truffle mayonnaise using the egg yolk, white truffle oil, vegetable oil and lime juice.
In a martini glass add the avocado top with tomato salsa, sliced lobster, truffle mayo and finish with a sprig of chive and a twist of salt and pepper.