It is essential that the ingredients are added in this order or the sauce will separate so be careful!
1) In a blender, blend garlic and add jalapeno (if using). Add oil. Keep blending. Very slowly add lemon juice. It should be about the consistency of mayonnaise or a little thinner. Add salt at the end. Careful! The sauce has serious kick to it as well as being mega garlicky!
Source of recipe: I got this recipe from my old boss who owned a Middle Eastern Restaurant