Rhubarb Jam

Confiture de rhubarbe (rhubarb jam) teaches one true thing before you touch the pan: moisture must leave quickly, but rhubarb must soften before fierce heat can drive it away. The stalks first slacken under cover until their fibres resemble fine vermicelli, then the jam boils uncovered to nappe, the coating stage when it falls from a spoon in slow, broad drops.

The original assumed a broad preserving pan, a range with a cool side and a fierce centre, and a cook free to stir without interruption. Your honest equivalent is a wide, heavy stainless steel pan, the smallest burner for the covered softening and the strongest burner for the finish. This batch uses 2 pounds of rhubarb rather than the professional limit of 5 or 6, while keeping the book's exact ratio of 13 ounces of sugar per pound. Loaf sugar becomes ordinary white granulated sugar, a change of form only, and a measured little water supplies the clear syrup the source assumes when it says to dissolve the sugar. One cook, one stove, one evening.

The glycerine paper and tied covers are obsolete sealing scaffolding, so clean preserving jars, two-piece lids, and a boiling-water process take their place. What must stay is the dish itself: syrup first, twelve minutes under cover, then a fierce reduction to nappe. That final boil is the step that matters. Stir across the entire pan floor without stopping, because rhubarb catches the instant your attention wanders.