Potage Jubilee, otherwise Balvet

Potage Jubilé, autrement Balvet (fresh-pea purée with Petite Marmite broth), teaches the discipline of dilution. Its one governing truth is proportion: three parts sweet pea purée to one part clear, meaty consommé. The broth should brace the peas and temper their sweetness without thinning away their character.

The original assumed a saucier, a stockpot never off the fire, and two finished preparations waiting at service. This version doubles the book's two-pint assembly to the requested home soup yield of about two quarts while preserving its exact three-to-one ratio. The source leaves the quantity of vegetable garnish to the cook, so three-quarters cup gives every bowl a generous spoonful without turning the potage into a stew. Separate hands and holding pans are brigade scaffolding and can go; the Purée de Pois Frais, Otherwise Saint-Germain (No. 648), the Marmite consommé, the brief boil, and the last-minute butter finish are the dish and stay. One cook, one stove, one evening.

When it is right, the soup pours in a thick green ribbon, with the clear savor of the Marmite beneath the peas and neat pieces of its vegetables appearing in every spoonful. The one step that matters most comes before the flame: measure three parts purée to one part consommé, because no amount of butter can restore a soup the broth has already thinned.