I was reading from my copy of Culinaria Spain and learned that the invention of alioli (you've no doubt seen the French word aioli on menus) is credited to the Roman emperor Nero. The original creation was a combination of garlic and olive oil. The addition of egg used to be frowned upon, but now is widely used. I'd like to continue the frown! ;-)
Here's the original version:
3 large cloves of garlic, coarsely chopped
1/4 - 1/2 tsp salt
1/2 - 1 cup olive oil
Lemon juice to taste
Pound the garlic and salt to an even consistency, using a mortar and pestle. Then add the olive oil drop by drop at first, increasing to a thin stream and stirring constantly until a thick paste is formed. Add lemon juice to taste.
I'm sure this could all be done in a food processor, but since mine is in storage I will be attempting this the old fashioned way the next time I get a day off. News to follow.