Reverse-seared 2 in ribeye finished in a dry 12 in skillet

01Abstract

A 640 g bone-in ribeye, 50 mm thick, was brought to 46 °C core in a 120 °C oven on a wire rack, rested 8 minutes, then finished in a dry 12 in cast-iron skillet at 440 °F. Total pan time was 150 s in a 45/45/30/30 rhythm, with 20 g of cold butter added at 90 s. Core temperature rose from 46 °C to 54 °C, which is the whole point of the method: the pan builds crust, the oven already did the cooking.

02Variables

Hypothesis A dry preheated iron gives a cleaner crust on a reverse-seared ribeye than an oiled pan, because there is no liquid fat to cool the contact patch.

03Process

1. Salt the steak 24 hours ahead and leave it uncovered on a rack in the fridge so the surface dries to a tacky film.
2. Cook it in a 120 °C oven on a wire rack to 46 °C core — roughly 55 minutes for this thickness — then rest 8 minutes under loose foil.
3. Preheat the dry skillet 6 minutes to 440 °F while the steak rests. Wipe the resting board of any liquid; the surface must go in dry.
4. Lay the steak in and start the timing: flip at 45, 90, 120 and 150 s. Add butter at 90 s and tilt the pan to spoon it over the crust.
5. Pull at 150 s, check the core reads 54 °C, and rest 5 minutes on a warm plate before slicing against the grain.

04Observations

• The dry pan produced a hard, even mahogany crust across the whole surface with no pale gaps; contact was complete within 20 s.
• With 1 tsp of oil added first, the oil pooled under the steak and the crust came out slightly darker at the edges but mottled in the middle.
• Four flips beat two: the two-flip version had a 15 mm grey band under the crust, the four-flip version about 8 mm.
• Butter at 90 s browned in 20 s and left a hazelnut smell; added at 30 s instead it simply burnt by 70 s.
• The pan smoked at 130 s in the butter stage — that smoke is milk solids, not the oil, and it stops the moment the pan comes off the heat.

05Conclusion

For a 50 mm steak the oven does the cooking and the iron does only the crust, so the finish is a 150-second job and the pan can stay dry for the first 90 seconds. Four flips in that window halve the grey band, and butter belongs at 90 seconds — earlier and it burns before the crust is done. Total weight loss on the 640 g steak was 118 g, of which most was water driven off in the oven stage, not in the pan.