Choosing a cast iron casserole

A cast iron casserole is the pot people inherit. It goes from hob to oven to table, it browns and braises and bakes bread, and unlike almost everything else in a kitchen it does not wear out. Which makes the buying decision worth getting right the first time.

Size is the decision most people get wrong

Casseroles are sold by volume and the temptation is to buy the biggest one. Resist it. A pot that is too large for the food in it means the liquid spreads thin and reduces too fast, and you lose the gentle, self-basting braise that is the whole point.

• Around 2.5 to 3 litres — two to three people, side dishes, small braises.
• Around 4.5 to 5.5 litres — the standard family pot. If you buy one, buy this.
• 6.5 litres and up — large joints, whole chickens, cooking for a crowd, batch stews.

Round or oval

Round is the more efficient shape. It matches a hob burner, heats evenly and is easier to stir. Oval suits long things — a leg of lamb, a whole fish, a rolled joint — but on a round burner the ends run cooler. If you are buying one pot, buy round.

Enamelled or bare

Enamelled cast iron needs no seasoning, will not rust, and is indifferent to acidic ingredients. That makes it the sensible default for tomato-based stews, wine braises and anything long and wet. Bare cast iron needs seasoning and care, but it takes higher direct heat and develops a natural non-stick surface over years.

A light-coloured interior enamel is quietly useful: you can see how dark your fond is getting, which matters when you are building flavour.

The details worth checking

• A heavy, well-fitting lid — this is what keeps a braise moist.
• Oven-safe knob rating, if you cook at high temperatures or bake bread in it.
• Wide, substantial side handles. A full 5-litre pot is heavy, and you will be lifting it with oven gloves on.
• Smooth, even enamel with no chips or thin patches around the rim.

Bought once and treated sensibly, this is genuinely a lifetime pot.