Food EditionCookFrenchSideGarlic Rouille
20 minIntermediateServes 4
French · Side

Garlic Rouille

Rouille is the necessary companion to a proper fish stew, providing a sharp, stinging garlic bite that cuts through broth. It relies entirely on the steady hand you use to feed the oil into the egg yolks.

Total time
20 min
Hands-on
20 min
Serves
4
Difficulty
Intermediate
Before you start

Patience is your only stabilizer.

If you pour the oil too quickly, the sauce will break into an oily mess. Keep your ingredients at room temperature to ensure the emulsion holds.

  • mortar and pestle
  • whisk
  • mixing bowl
Ingredients

What goes in.

  • 4 clovesgarlic, peeled
  • 1 pinchsaffron threads
  • 2egg yolks, room temperature
  • 1 cupextra virgin olive oil
  • 1 tsplemon juice
  • to tastefine sea salt
  • 1/2 tspcayenne pepper
The key technique

Droplet by Droplet

The first quarter cup of oil must be added drop by drop while whisking constantly. Once the mixture thickens and looks like a cream, you can increase the flow to a very thin stream.

Step by step

The method.

  1. Prepare the aromatics

    Place the garlic cloves and a generous pinch of salt into the mortar. Crush them into a smooth, uniform paste. Add the saffron threads and grind until they release their color into the garlic.

  2. Combine the base

    Transfer the garlic paste to a medium bowl. Add the egg yolks and the cayenne pepper. Whisk vigorously for one minute until the yolks are aerated and slightly pale.

  3. Begin the emulsion

    Add the olive oil one drop at a time, whisking continuously in the same direction. Do not add more oil until the previous drop is completely absorbed.

  4. Finish the sauce

    Once the mixture thickens, slowly stream in the remaining oil. Stir in the lemon juice at the end to tighten the texture and balance the weight of the oil.

Variations

Other turns to take.

Bread-thickened

Soak a small piece of day-old crustless sourdough in fish stock, squeeze it dry, and mash it into the garlic paste before adding the yolks for a more rustic, textured sauce.

Tips & troubleshooting

When it doesn't go to plan.

Tip

If the sauce breaks, stop adding oil immediately. Put a fresh egg yolk in a clean bowl and slowly whisk the broken mixture into the new yolk, a teaspoon at a time.

Tip

Use a light-flavored olive oil if you find extra virgin too aggressive, though traditional recipes favor a robust, peppery oil.

Tip

Keep the bowl steady by wrapping a damp kitchen towel into a ring base for it to sit on.

Questions

The ones that keep coming up.

Can I use a food processor?

You can, but it is easy to over-process and heat the sauce, which causes the emulsion to fail. The mortar and pestle produce a superior, silkier texture.

How long will this last?

Because it contains raw egg, consume it immediately. If you must keep it, store it in an airtight container in the coldest part of the refrigerator for no more than 24 hours.

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