Purée d’Oseille et de Sagou à la Crème

Purée d’Oseille et de Sagou à la Crème (sorrel and sago cream soup) teaches one exact lesson: enrichment is not boiling. The sharp leaves must first collapse in butter, the sago must swell until translucent, and the liaison, egg yolks and cream used to bind the soup, must thicken gently enough to remain silken.

The source gives the sago precisely, three ounces, then leaves the choice of milk or consommé and the final consistence to the cook. This home version keeps those three ounces, chooses milk for the cream preparation, and finishes at about two quarts. The original assumed a saucier watching separate pans and liquid always ready for adjustment; here a saucepan, a skillet, and an immersion blender replace the extra hands and tamis. Large service quantities are scaffolding. Buttered sorrel, thoroughly cooked sago, and the liaison are the dish. One cook, one stove, one evening.

The moment that decides everything comes after the yolks enter. Keep the soup below a simmer and stir without pause until it lightly coats the spoon. Give it a hard boil and the liaison grains; hold your nerve over gentle heat and the soup turns glossy, tender, and softly tart.