Spanish Alioli and Roasted Eggplant Dip
This vibrant two-part dip marries the pungent richness of classic Spanish alioli with silky roasted eggplant. Whole garlic cloves are roasted until mellow and sweet, then emulsified into fruity olive oil to create a golden, garlicky mayonnaise. The eggplant is charred until its skin blackens and flesh collapses, lending deep flavor and a velvety texture that contrasts beautifully with the bold garlic sauce. Serve warm or at room temperature with crusty bread, roasted vegetables, or crudités for dipping.
- Prep
- 15 min
- Cook
- 45 min
- Wait
- 10 min
- Total
- 1 hr 10 min
- Makes
- About 2 cups (480 ml) combined dips
Steps
Before you start
- Preheat your oven to 400°F (200°C)
- Bring all eggs to room temperature (about 30 minutes before starting)
- Have all ingredients measured and ready before you begin the alioli, as the emulsion requires attention
Roast the garlicOven 400°F / 205°C
- Place the 12 unpeeled garlic cloves in a small oven-safe skillet or baking dish.
- Drizzle with 1 tablespoon (15 ml) of olive oil and season lightly with salt.
- Roast at 400°F (200°C) for 18–20 minutes, shaking the pan halfway through, until the cloves are very soft and golden when you squeeze them.
- The skin will darken and peel will slip off easily.
- Set aside and cool slightly; you will need 3 cloves for the eggplant dip and will use the remaining 9 for the alioli.
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Ready when: Garlic cloves are very soft; skin darkens and peels slip off easily
Tip: Don't skip roasting—raw garlic will be too sharp and won't emulsify smoothly into the alioli.
Prepare the eggplants
- While the garlic roasts, halve the 2 eggplants lengthwise.
- Use the tip of your knife to lightly score the flesh in a crosshatch pattern without cutting through the skin.
- This helps the eggplant cook evenly and makes it easier to scoop out later.
- Place the halves skin-side down on a baking sheet.
- Brush the flesh generously with 2 tablespoons (30 ml) of olive oil and season all over with salt and pepper.
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Ready when: Eggplant is evenly coated and scored
Tip: Score the flesh lightly; you're looking for a grid pattern to help steam escape and flavor penetrate, not deep cuts.
Roast the eggplantsOven 400°F / 205°C
- Place the prepared eggplants on the baking sheet (skin-side down) in the oven alongside the garlic.
- Roast at 400°F (200°C) for 25–30 minutes, until the flesh is completely collapsed, very soft, and dark golden brown at the edges.
- The skin should be black and charred in spots.
- Remove both the garlic and eggplants from the oven.
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Ready when: Flesh is completely soft and collapsed; skin is charred and blackened in places
Tip: Don't undercook the eggplant; you want deep caramelization and full softness so the dip is silky and flavorful.
Cool and scoop the eggplant
- Let the roasted eggplant halves cool for 5 minutes until cool enough to handle.
- Using a sturdy spoon, scoop the soft flesh away from the skin, discarding the skin and any charred bits you want to remove (though some light char adds depth).
- Transfer the scooped eggplant to a medium bowl.
- You should have about 1.5 cups (360 ml) of eggplant flesh.
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Ready when: Eggplant is cool enough to handle; flesh separates easily from skin
Tip: Reserve any liquid that drains from the eggplant—you can fold a little back in if the dip seems too thick.
Make the alioli base
- Squeeze the roasted garlic cloves out of their skins into a mortar and pestle (or food processor).
- You should have about 9 cloves reserved for the alioli.
- Mash them into a smooth, creamy paste.
- Add the 2 room-temperature egg yolks and a pinch of salt.
- Whisk or stir vigorously for about 1 minute until the mixture is pale and slightly thickened.
- The egg yolk coats the mortar and begins to thicken.
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Ready when: Mixture is pale, thick, and ribbon-like when you lift the whisk or pestle
Tip: All ingredients must be at room temperature or the emulsion will break. If using a mortar, don't rush—steady whisking is essential.
Emulsify the alioli, first addition
- Whisking constantly and vigorously, begin adding the first third of the olive oil (about 2.5 tablespoons or 40 ml) one drop at a time, incorporating each drop completely before adding the next.
- This slow addition is crucial—rushing causes the emulsion to break.
- The mixture should thicken and become glossy.
- Once this first addition is fully incorporated and you see the sauce is holding together, continue whisking.
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Ready when: First third of oil is fully incorporated; sauce is glossy and thick
Tip: If the alioli breaks (becomes grainy or separates), stop and start over with a fresh egg yolk and garlic paste, slowly whisking the broken sauce into it.
Continue emulsifying, faster addition
- Once the first third of oil is incorporated, you can add the remaining oil faster.
- Pour the second third (about 40 ml) in a thin, steady stream while whisking constantly.
- When that is fully incorporated, add the final third in the same manner.
- The alioli should become pale golden, thick, and glossy.
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Ready when: All oil is incorporated; alioli is pale, glossy, and holds peaks on the whisk
Tip: Stop adding oil if the emulsion looks like it might break (becomes very thick and grainy). You can thin it with a few drops of water or lemon juice instead.
Season the alioli
- Remove the mortar and pestle from heat and whisk in the 2 tablespoons (30 ml) of lemon juice.
- The acid will thin the alioli slightly and brighten the flavor.
- Taste and adjust the seasoning with salt.
- If the alioli seems too thick, whisk in 1 tablespoon (15 ml) of warm water at a time until you reach a spoonable consistency.
- The finished alioli should be pale golden, silky, and coat the back of a spoon.
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Ready when: Alioli is pale, glossy, and coats the back of a spoon; tastes balanced with bright lemon and deep garlic
Tip: Lemon juice stabilizes the emulsion, so don't skip it. If you prefer a thinner alioli, you can whisk in more water by the teaspoon.
Finish the eggplant dip
- Fold the 3 reserved roasted garlic cloves (squeezed out of their skins) into the scooped eggplant.
- Add the 1 tablespoon (15 ml) of lemon juice and the remaining 1 tablespoon (15 ml) of olive oil.
- Fold gently until combined.
- Taste and season with salt and pepper.
- If using fresh parsley, fold it in now.
- The eggplant dip should be soft, rich, and slightly chunky (not perfectly smooth).
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Ready when: Eggplant is evenly combined; dip is soft, creamy, and well-seasoned
Tip: Don't overmix—the eggplant should have a slightly rustic texture. If it becomes too smooth, it will lack character.
Serve and present
- Spoon the eggplant dip into one serving bowl.
- Transfer the alioli to another serving bowl or dollop it directly onto the eggplant dip if you prefer them blended together.
- Serve warm or at room temperature with crusty bread, toasted pita, roasted vegetables, or fresh crudités.
- The two dips complement each other beautifully—guests can enjoy them separately or swirl them together.
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Tip: If serving warm, transfer the dips to a warm serving bowl just before guests arrive; they'll stay at the ideal temperature for 15–20 minutes.
Good to know
Tips
- Room temperature is critical for the alioli: cold ingredients prevent proper emulsification. Set egg yolks and oil out 30 minutes before you start.
- If your alioli breaks, don't throw it away. Start fresh with a new egg yolk and garlic paste in a clean bowl, then slowly whisk the broken sauce into it—it will often come back together.
- For a silkier dip, press the roasted eggplant through a fine sieve after scooping. This removes any remaining skin or fiber and creates an incredibly smooth texture.
- These dips are excellent alongside grilled vegetables, roasted potatoes, or Spanish-style cured meats. They're also delicious dolloped onto warm flatbread with fresh herbs.
Make ahead
You can make the alioli up to 2 days ahead and refrigerate it in an airtight container (it will thicken slightly). Make the roasted eggplant dip up to 1 day ahead and refrigerate. Both improve in flavor if made the morning of serving. Do not freeze either dip, as the emulsion in the alioli will break.
Storage & reheating
Store both dips separately in airtight containers. Refrigerate for up to 3 days. The eggplant dip can be served cold, warm (gently reheat in a small saucepan over low heat, stirring often), or at room temperature. The alioli is best served at room temperature or slightly warmed; if it has thickened in the fridge, whisk in a teaspoon of warm water to loosen it. Do not freeze.
Substitutions
- large egg yolks, at room temperature → 1 tablespoon (15 ml) of Dijon mustard plus 1 whole large egg (raw, at room temperature). This makes a lighter, more stable emulsion but produces a slightly less rich alioli. The mustard adds a little sharpness.
- extra-virgin olive oil → Light olive oil or avocado oil. Use a milder oil if you find extra-virgin too assertive, though the traditional Spanish version relies on fruity olive oil for its character.
- medium eggplants → Japanese eggplant or 3–4 small globe eggplants, roasted separately until charred. Smaller varieties cook faster (15–20 minutes) and may produce less liquid. Adjust cooking time accordingly.
- fresh flat-leaf parsley → Fresh basil or mint, finely chopped, or a pinch of smoked paprika. Basil adds a Mediterranean brightness; smoked paprika adds warmth and depth that echoes the charred eggplant.
