Traditional Spanish Garlic Aioli (Alioli)

Traditional alioli is a powerful Mediterranean sauce created by patiently emulsifying fresh garlic with extra-virgin olive oil and coarse salt, without eggs or other thickeners.

The mortar method requires steady stirring and very gradual additions of oil, but it produces a dense, glossy sauce with an unmistakably bold garlic flavor.

Why You’ll Love This Recipe

• It uses only three simple ingredients and contains no eggs or dairy.
• The slow mortar technique creates a thick emulsion without mayonnaise or commercial stabilizers.
• Fresh garlic gives the sauce a more intense and authentic flavor than bottled alternatives.
• It pairs with seafood, rice, potatoes, vegetables, meat, and toasted bread.
• The recipe can be divided easily when a smaller quantity of sauce is needed.

Ingredient Notes

Fresh garlic

Use firm cloves without soft spots or signs of sprouting. Removing the central green germ creates a cleaner flavor and can reduce unwanted bitterness.

Extra-virgin olive oil

Choose a smooth, fruity olive oil with moderate bitterness. Arbequina-style olive oil is an excellent option and is increasingly available in US supermarkets.

Coarse sea salt

The coarse crystals help break down the garlic fibers as they are crushed. Kosher salt is a practical US substitute, although the amount may need slight adjustment depending on the brand.

Expert Tips

• Crush the garlic into an absolutely smooth paste before adding any oil, since visible pieces make the emulsion less stable.
• Add the first several tablespoons of oil drop by drop; beginning too quickly is the most common reason the sauce separates.
• Stir continuously in the same direction and keep the pestle in contact with the garlic mixture.
• Ask another person to pour the oil slowly while you stir if maintaining a controlled stream is difficult.
• If the alioli begins to look oily or separated, stop adding oil and continue grinding until the mixture comes back together.
• Use ingredients at a similar room temperature because extreme temperature differences can make emulsification more difficult.

Serving Suggestions

Serve a small spoonful alongside arroz a banda, grilled fish, roasted vegetables, boiled potatoes, fried potatoes, or grilled meat.

Spread it sparingly on toasted rustic bread or offer it as part of a tapas platter with olives and roasted peppers.

Storage and Reheating

Transfer the alioli to a clean airtight container and refrigerate it immediately at 40°F (4°C) or below. Because it contains fresh raw garlic suspended in oil, use it within 4 days and discard it if it has remained at room temperature for more than 2 hours. Serve it cold or allow only the portion being used to stand briefly at room temperature. Do not reheat it, and freezing is not recommended because the emulsion may separate.

Frequently Asked Questions

Is traditional alioli made with egg?

No. Authentic traditional alioli is an emulsion of garlic, olive oil, and salt. Sauces made with egg are garlic mayonnaise rather than classic alioli.

Why did my alioli separate?

The oil was probably added too quickly, the garlic was not crushed finely enough, or the mixture was not stirred continuously. Add the first oil one drop at a time and wait until each addition is absorbed.

Can traditional alioli be made in a blender?

A blender can produce a garlic sauce, but the small amount of garlic and absence of egg make the traditional emulsion difficult to control mechanically. A mortar provides the most reliable authentic texture.

How can I make a smaller batch?

Use 1 garlic clove, a pinch of coarse salt, and approximately 2/3 cup (165 ml) olive oil. Follow the same slow emulsification method and stop adding oil when the desired consistency is reached.