Cast-Iron Burgers

A heat-control experiment: thick patties cooked through on cast iron without burning or drying out

· 45 minutes start to finish · experimental beef supper

Today was about heat control. A thick patty cooked all the way through without burning the outside or squeezing out all the juice is a genuinely tricky thing to get right. The usual way here is the BBQ; this was the indoor version, on cast iron

In the bowl

Cold ground beef with salt, pepper, paprika, a little cayenne and cumin ground fresh in the mortar, plus garlic and onion. A big onion is out on the board, but only a small amount actually goes in, less than half of it. The full amounts are written up as a recipe: Beef hamburger patties

Forming the patties

Divided into four and shaped, then onto a plate and into the fridge to firm up. Press them together a little more firmly than feels necessary. These held together fine, but the looser they are the more juice escapes while they cook

While they chill

The fridge time is for everything else. The toppings get sliced, tomato, pickle and onion, and the cast iron comes up to heat slowly and evenly so it is ready when the patties are

Mayonnaise on the buns

Mayonnaise on the cut sides, not butter, with a crinkle of salt. Toasted in a pan they come out basically perfect

Onto a screaming-hot pan

The pan as hot as it will go, then the patties in for a hard sear, about two minutes a side. That quick crust is what holds most of the juice inside

Lid on, heat down

Then a lid and low heat to bring the middle up to 71.1 °C without scorching the outside. The first batch got left alone under the lid and shot straight past the target, the thermometer caught it around 90 °C. Kept flipping, and the second batch held much better. Any juice that does escape into the pan goes straight back on top of the patty

+45 min A finished burger cut in half, the patty cooked through and juicy