3 Make dressing
Meanwhile, grate half of the Parmesan with a fine blade (use the rest for garnishing). Peel and mince the garlic. Finely chop the anchovies. In a very large bowl, juice the 0.5/1/1 lemon. Add the grated Parmesan, minced garlic, 1/1/2 tbsp of lemon juice, mayonnaise, black pepper, Dijon mustard and olive oil. Whisk until smooth. If the dressing is too thick add a splash of olive oil.