Buying guide
Why a preserving pan is unlined copper, wide and shallow — and why that shape sets jam at the right minute.
Why copper, and why unlined
Jam is a race between evaporation and overcooking. Copper drives heat into the fruit faster than any other pan metal, so the sugar reaches setting point before the fruit collapses into syrup. Unlined, because nothing should sit between the flame and the contents.
Fruit acid on bare copper is the traditional method, not a cost saving.
Why wide and shallow
Water leaves from the surface, not the volume. A wide pan evaporates faster and spends less time cooking the fruit. A tall stockpot does the opposite, which is why jam made in one tastes flat and sets late.
Sizes, in practice
A 36 cm jam pan handles 2 to 3 kg of fruit comfortably. Below 30 cm you lose the surface advantage; much larger needs a serious hob to drive it. Sugar pans are a different tool — small, deep and unlined, for caramel where a thermometer matters.
Lead time
Jam and sugar pans are hand-formed and run to twelve weeks from Normandy rather than the usual six to eight. Buying for a season means ordering early.
Where to go next
Questions people actually ask
Why is a jam pan not lined?
Nothing should come between the flame and the sugar, and the pan is used only for preserving, so reactivity is not a concern.
What size jam pan do I need?
36 cm suits 2 to 3 kg of fruit. Below 30 cm you lose the evaporation advantage that makes the pan work.
Can I use a jam pan for anything else?
Keep it for preserving and sugar work. Unlined copper is reactive with savoury acids over long cooking.
Made by Mauviel1830 in Villedieu-les-Poêles, Normandy. The Culinary Equipment Co is the appointed distributor for South Africa.