Pound and crush the garlic with a pinch of salt to a paste in a mortar, or chop finely using the flat part of your knife to crush the garlic and salt into a smooth paste. This may take a few minutes but it is essential that the garlic is perfectly smooth and that no chucks remain before starting to make the alioli. Transfer to a bowl, add the egg yolks and whisk to blend. Still whisking, slowly pour in a quarter of the olive oil, a few drops at a time, until the sauce starts to acquire some body, and then pour in the rest of the olive oil in a slow, steady stream, until it becomes a creamy thick sauce. To finish, add in the lemon juice, plus an extra squeeze of lemon juice to taste, and the hot water. Stir well and serve. If not serving right away, store in the refrigerator and consume within 2 days.
Food Network Kitchens suggest caution in consuming raw and lightly-cooked eggs due to the risk of Salmonella or other food-borne illness. To reduce this risk, we recommend you use only fresh, properly-refrigerated, clean, grade A or AA eggs with intact shells, and avoid contact between the yolks or whites and the shell. For recipes that call for eggs that are raw or undercooked when the dish is served use shell eggs that have been treated to destroy Salmonella, by pasteurization or another approved method.
Cook's Notes: Ensure all of your ingredients are at room temperature to make this recipe.
If you want to tame the flavor of raw garlic, blanch the garlic for a couple of minutes in boiling water or you can substitute sweet smoky roasted garlic, instead of raw.
You can also add almost anything to flavor this alioli, like fresh herbs, other citrus juice, olive tapenade, sundried tomato paste, grainy mustard, miso paste (omit the salt in the recipe, if using miso) and even brandy...