Yellow Sauce

Origin: Madrid, Spain

Source: Anonymous, 1921

Ingredients

Instructions

  1. Hard-boil eggs and separate the whites from the yolks.
  2. Chop the whites very finely.
  3. In a bowl, mash the yolks with a wooden spoon, then gradually incorporate the oil thread by thread, stirring constantly.
  4. Once well combined, add salt, a small spoonful of caldo (broth), a tablespoon of vinegar, a pinch of mustard, and a pinch of pepper.
  5. Mix well, then fold in the chopped egg whites.
  6. Transfer to a serving bowl.

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