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Rouille: An Essential Topping For Your Next Slice of Bread

rouille

Creamy, mildly spicy and redolent of garlic, rouille is a French sauce that's somewhere between aioli and Romesco. How it's made varies widely depending on where you happen to be from, but it generally contains olive oil, garlic and piment d'espelette (a French chili pepper) along with a starch such as potatoes or stale bread.

While it may sound a bit odd at first, the person who came up with the idea of adding bread to rouille is a genius. Not only does the bread add umami to the sauce, the starch from the bread acts as a stabilizer helping the lecithin in the eggs and the phospholipids in the garlic hold the oil and water emulsion. Put simply the bread makes it almost impossible to mess this up.

While this is traditionally made with a mortar and pestle, I like pureeing the garlic, bread, stock and egg yolk using a hand blender, which achieves a much smoother texture. You could also use a small food processor, though you may need to double the batch to make it spin.

I know it might be tempting to use the hand blender to incorporate the olive oil, but don't do it. I'm not sure why this happens, but when you emulsify the mixture with a hand blender, the rouille turns bitter.

In my version, I like using smoked paprika because the smoky flavor makes for the perfect complement to a well toasted slice of bread, and it also goes incredibly well with seafood soups such as bouillabaisse or Soupe de Poisson, but it's also a fantastic spread for sandwiches or as a condiment for fried foods.

Since the egg yolk is used raw it's essential that you use pasteurized eggs to avoid getting sick.

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This recipe was originally posted on PBS Food.

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