Garlic Mayonnaise made with Bread and Fish Stock (Rouille)

Introduction

Rouille is a Provençal garlic and saffron mayonnaise thickened with bread and bound with fish stock—a traditional accompaniment to bouillabaisse and seafood soups. The bread acts as both binder and body, letting you create a luxurious, emulsified sauce without relying on large quantities of egg. You’ll whisk it much like standard mayonnaise, but the result is distinctly savory and aromatic.

Recipe Details

• Prep Time: 15 minutes
• Cook Time: 0 minutes
• Total Time: 15 minutes
• Servings: 4 to 6 (makes approximately 1.5 cups)

Ingredients

• Baguette bread
• 1 egg yolk
• 100 ml olive oil
• 4 garlic cloves
• Saffron or annatto (for color)
• 6 Tbsp fish stock
• Salt
• Pepper

Instructions

1. Blend the bread, fish stock, and egg yolk together into a paste.
2. Crush the garlic and saffron or annatto, and add to the paste.
3. Gradually add the oil with one hand while vigorously whisking with the other, as when preparing any other mayonnaise.
4. Add salt and pepper to taste.

Variations

Skip the saffron: Use annatto alone for a warm, earthy color and slightly different flavor profile—the rouille will be less floral but equally rich.

Roasted garlic version: Roast the garlic cloves until soft before crushing and adding to the paste; this mellows the sharpness and adds sweetness.

Bread swap: Substitute the baguette with sourdough or whole-wheat bread for deeper flavor, though the texture will be slightly denser.

Herb addition: Whisk in 1 tablespoon of finely chopped fresh parsley or chives after the oil is fully incorporated for freshness and color contrast.

Lighter body: Replace half the fish stock with chicken or vegetable stock if you prefer a less intensely maritime flavor.

Tips for Success

Start with room-temperature ingredients: Cold egg yolk and oil emulsify poorly; leave them on the counter for 15 minutes before beginning.

Add oil slowly at first: Whisk in just a teaspoon or two of oil in the first minute—once the emulsion begins to thicken, you can add oil slightly faster, but never in a rush.

Use a tight, vigorous whisking motion: The speed and force of your whisk matter as much as the gradual oil addition; if your arm tires, switch hands or use an immersion blender on low speed.

Watch for breaking: If the rouille suddenly splits or looks grainy, stop adding oil immediately. Whisk in a fresh egg yolk in a clean bowl, then slowly whisk the broken mixture back in.

Toast your bread first: Lightly toasting a thin slice of baguette before blending adds subtle depth and prevents the paste from becoming too wet.

Storage and Reheating

Rouille does not require reheating; serve it cold or at room temperature directly from the fridge. If separation occurs during storage, whisk gently by hand or use an immersion blender on low speed to re-emulsify before serving.

FAQ

Can I use pasteurized egg yolk instead of a raw one?

Yes—pasteurized egg yolk is safer and works identically in emulsification. Many supermarkets sell pasteurized eggs, and some specialty stores offer pasteurized egg yolks sold separately.

What if I don’t have fish stock on hand?

Chicken or vegetable stock will work, though the sauce loses its marine character. If you have shellfish shells or shrimp heads, a quick homemade stock (20–30 minutes simmering) is worth the effort.

Can I make this ahead for a dinner party?

Yes, make it up to 4 days in advance and store it covered in the fridge. Whisk or blend it gently for 10 seconds just before serving if it has separated slightly.

Why did my rouille break or refuse to thicken?

Most often, the oil was added too quickly, or the egg yolk was too cold. If it breaks, start over with a fresh egg yolk in a clean bowl and slowly whisk in the broken mixture—it usually recovers.