Ajo Blanco Soup: Chilled Spanish Almond and Garlic Soup

Ajo blanco is a chilled Andalusian soup made from almonds, bread, garlic, olive oil, and water, traditionally finished with sherry vinegar and grapes. Its smooth, creamy texture comes from blending the ingredients rather than adding dairy, making it a refreshing first course on a warm day.

Ingredients

1 cup (140 g) blanched, skinless almonds, preferably raw and unsalted
2 ounces (55 g) day-old white bread, crusts removed, torn into pieces
1½ cups (360 ml) cold water, plus more as needed to adjust consistency
1 small garlic clove, peeled and center germ removed if green
½ teaspoon (3 g) fine salt, plus more to taste
3 tablespoons (45 ml) extra-virgin olive oil
1½ tablespoons (22 ml) sherry vinegar, plus more to taste
½ cup (75 g) seedless green grapes, halved, for serving
1 tablespoon (15 ml) extra-virgin olive oil, for finishing
2 tablespoons (15 g) sliced or roughly chopped almonds, toasted, for garnish (optional)

Instructions

Soak the bread. Put the torn bread in a small bowl and pour over about ½ cup (120 ml) of the cold water. Leave it for 10 minutes, until softened. If the bread is very dry, press it gently beneath the water so it absorbs evenly.
Blend the base. Add the almonds, softened bread and its soaking water, garlic, salt, and remaining 1 cup (240 ml) cold water to a blender. Blend for 1 to 2 minutes, stopping to scrape down the sides, until the mixture looks as smooth as possible. A high-speed blender gives the silkiest result, but a standard blender works if you blend in batches and allow extra time.
Emulsify with oil. With the blender running on low, slowly pour in the 3 tablespoons (45 ml) olive oil. Add the sherry vinegar and blend for another 10 seconds. Taste and adjust the salt or vinegar. The flavor should be gently garlicky, tangy, and rounded by the almonds; add a tablespoon or two of cold water if it is thicker than you like.
Strain if desired. For a particularly smooth soup, pour it through a fine-mesh sieve into a covered container, pressing the mixture with a spoon. This step is optional if your blender has made the soup completely smooth. Discard any coarse solids left in the sieve.
Chill thoroughly. Cover and refrigerate for at least 2 hours, until cold. The soup will thicken a little as it rests. Stir it well before serving; if needed, whisk in cold water a tablespoon at a time until it is pourable but still creamy. Taste once more and adjust the seasoning.
Garnish and serve. Divide among four chilled bowls. Add the halved grapes, drizzle with the finishing olive oil, and scatter over toasted almonds if using. Serve immediately while cold.

Tips

Use a mild garlic hand. Raw garlic grows more assertive as the soup sits. Start with one small clove, especially if it is pungent, and add more only after blending and tasting. Removing the green germ can soften a sharp, bitter edge.
Choose the right bread. Plain, mildly flavored white bread is traditional and helps the soup emulsify. Avoid strongly sour, seeded, or heavily seasoned bread, which can distract from the almonds. If you have only fresh bread, toast it lightly and let it cool before soaking.
Sherry vinegar is worth seeking out. It gives the characteristic rounded acidity. If unavailable, use a little white wine vinegar; it is sharper, so begin with 1 tablespoon (15 ml) and add more to taste. Do not replace it with sweet balsamic vinegar.
Blend patiently, then chill. Almonds need enough blending to become fine, and chilling lets the flavors settle. If the soup separates slightly, whisk or briefly reblend it. Avoid adding ice cubes to thin it, since they dilute its flavor as they melt.

Serving Suggestions

Serve ajo blanco as a small first course, or offer a larger bowl for a light lunch with a crisp salad and bread. The traditional garnish of green grapes adds a cool, juicy contrast to the savory almond base; halved grapes are easier to eat than whole ones. A drizzle of good extra-virgin olive oil and a few toasted almonds add aroma and crunch. Keep the bowls cold and bring the soup to the table just before eating, as it is best served well chilled.

Variations

Regional and household versions vary in the balance of bread, almonds, garlic, water, and vinegar, so adjust the texture and sharpness to suit your taste. For a more pronounced almond flavor, replace up to ¼ cup (60 ml) of the water with additional blanched almonds, then blend thoroughly and check the thickness. For a lighter soup, add cold water a little at a time rather than reducing the oil, which helps create its smooth, emulsified texture.

Green grapes are a classic accompaniment, but diced melon or a few drops of fruity olive oil also work well. For a gluten-free version, omit the bread and blend in 2 tablespoons (30 ml) more water at first, adding more as needed; the result will be less thick and less bread-rounded, but still creamy from the almonds. For a dairy-free soup, no substitution is needed: this recipe contains no dairy.

Storage and Reheating

Refrigerate the soup in a covered container within 2 hours of blending and keep it at 40°F (4°C) or colder. It is best within 2 days, though it can be kept refrigerated for up to 3 to 4 days. Stir or briefly reblend before serving, and adjust with a splash of cold water if it has thickened. Freeze in an airtight container for up to 1 month; thaw in the refrigerator and reblend, since freezing can cause the emulsion to separate. This soup is served cold, so do not reheat it.

Frequently Asked Questions

Is ajo blanco the same as gazpacho?
No. Both are chilled Spanish soups, but ajo blanco is based on almonds and bread, while familiar red gazpacho is made chiefly with tomatoes and other vegetables. Ajo blanco is usually pale and creamy, with grapes as a common garnish.

Can I make ajo blanco without a high-speed blender?
Yes. Use a standard blender, work in batches if necessary, and blend longer, scraping down the sides. Straining the soup through a fine-mesh sieve will remove remaining graininess. A food processor can work, though it may not make the almonds quite as smooth.

Can I prepare it ahead?
Yes. Make the soup up to a day ahead and refrigerate it covered. Before serving, stir or reblend, check the thickness and seasoning, and add the grapes and other garnishes at the last moment so they stay fresh and crisp.

Why is my soup grainy or too thick?
Graininess usually means the almonds need more blending or the soup needs straining. Thickness can increase as the bread absorbs liquid during chilling; whisk in cold water a tablespoon at a time until it reaches the consistency you want.

Can I use almond flour instead of whole almonds?
Yes, though whole blanched almonds generally give a fresher flavor and more control over texture. Use 1 cup (140 g) finely ground almond flour, blend it with the soaked bread and other ingredients, and strain if it feels gritty. Avoid sweetened almond meal or products with added flavorings.

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