This wickedly delicious garlic mayonnaise originated in Catalonia and quickly spread throughout Spain. In its purest form, this sauce would never be made with egg yolk - only olive oil, garlic and salt - however it is easier to achieve the emulsion at home by using the yolk, and I like the creamy texture it gives. Alioli is a quintessential sauce and is such a wonderful accompaniment to almost anything including roast beef and other cold meats or vegetables such as artichokes, asparagus or poached leeks. It's also amazing as a sauce for olive oil-fried seafood, like tender calamari, and is delicious drizzled over young lamb chops, roasted chicken, grilled fish and seafood, such as lobster grilled on the half shell. For a decadent occasion, add an additional clove of garlic to the recipe and a little extra lemon juice, and toss hot olive oil-fried potatoes (in chunks) with the alioli. Sprinkle a pinch of cayenne or paprika on top or spoon a dollop of sundried tomato paste on top and serve.