Went back to recreate a larger quantity of the caesar salad for from Meal #1 in The Family Meal, noticed another niggly error and fixed it.
The problem is in the quantity for Xerxes vinegar in the “for 20” English version of the recipe. The French version is worse: the larger versions call for 8ml and 30ml respectively — which should be 80 and 300ml. This looks like it was translated into the English as 1/8 cup (???) in the “for 20” quantity. Odd. (The “for 75” is fine.)
Up the quantities to a generous 1/3cup in the “for 20” version.
(The two smaller versions of the recipe are fine — the c.à.s. measurements in the French translate directly to Tablespoons.)
Cooking Ferran Adriá’s The Family Meal — The Errata