Cut each garlic clove in half lengthwise and remove the inner germ. This process makes the garlic taste a lot less spicy.
Add to your food processor. Your food processor must have a small emulsifier spout. It has to be a strong and large food processor (minimum of 12 cups).
Add the salt to the garlic and turn the food processor on. Let it go until the garlic gets finely cut.
Stop, and scrape down the sides.
Add 3 tablespoons of the oil you are using and about 1 teaspoon of lemon juice. Start the food processor once again and you should see the garlic getting chopped even more finely.
Stop the processing one more time and scrape down the sides, making the garlic move towards the middle. Close the lid, and add the emulsion sleeve to your food processor.
Start the food processor and add ½ cup of the oil into the emulsifier cup. Let it drip slowly, then once it is finished, add another ½ cup. Repeat until you finish 2½ cups of oil.
Once finished, add in ½ of your lemon juice to the emulsifier cup. Once it is finished, add ½ cup of the oil, then add the remaining lemon, and finally the last bit of oil.
Once it is finished, it means that your garlic sauce is now ready. It should be fluffy and creamy.