To roast garlic cloves: wrap unpeeled cloves with foil and pop in the oven at 170-180°C for ~30 minutes or until very soft. Then squeeze the garlic out of its skin. You can do this while baking something else. Roasted garlic will keep for a few days in the fridge.
Place all ingredients in a food processor or blender and process until the sauce reaches your desired consistency.
Season with salt and pepper.
This recipe will make plenty of leftover sauce.
Mayonnaise
If you have never made mayonnaise before, check out some YouTube videos before proceeding.
Put the egg yolks, lemon juice and mustard in a food processor or blender.
Start the motor and slowly pour the oil in a thin stream.
Season with salt and pepper.
This recipe will make plenty of leftover sauce.
To assemble
Chop the eggs.
Mix all the ingredients, season with salt and pepper.
Garnish with halved cherry tomatoes and basil leaves.