Potage Lamballe

Potage Lamballe (pea purée with tapioca in consommé) teaches one precise lesson: cook the tapioca completely before it touches the peas. Each pearl must turn translucent in the consommé, with no chalky center left to finish later, because boiling the married soup would dull the purée you worked to preserve.

The original formula assumed a saucier on staff, a finished purée of peas waiting in one pot, and consommé never off the fire for an ordinary potage au tapioca in another. The home equivalent is honest and smaller: two saucepans, two finished halves, and a warmed tureen for about two quarts. The separate stations were brigade scaffolding and can go. The equal proportion and last-minute marriage are the dish, and they stay.

When it is right, the soup is silky but not heavy, its translucent pearls suspended through the green purée rather than gathered at the bottom. Keep a little hot consommé beside you, since tapioca continues drinking as it waits. If the soup tightens, loosen it gently. Ça se rattrape.