The Kitchen · № 09
The house rub: vanilla, coffee and cocoa
Coffee and cocoa on beef is proven steakhouse practice. The vanilla is ours, and the chemistry is on our side.
Where this comes from
Two halves, and we will be straight about both.
The first half is proven. Coffee and cocoa on beef is established steakhouse practice, not a novelty; Bobby Flay's coffee-rubbed rib-eye is the reference point, and coffee's tannins both tenderise the surface and build the crust. You can look that part up.
The second half is ours. No chef of standing has put vanilla on a dry-aged steak, and we are not going to pretend otherwise. What we have instead is the chemistry, and it is better than a borrowed name. When wood burns, its lignin breaks down and releases guaiacol and syringol, the compounds that make smoke smell smoky, and it also releases vanillin, the compound that makes vanilla smell of vanilla. Every steak ever cooked over a wood fire has been seasoned with vanillin by the fire itself. Meanwhile a cured vanilla bean carries guaiacol and 4-methylguaiacol, and researchers analysing the bean rate both as odour-potent as vanillin.
Fire and vanilla are not opposites. They are, in part, the same molecules arriving from two directions. This rub finishes a circle the chemistry had already drawn.
Aroma chemistry: lignin pyrolysis of wood smoke; GC-olfactometry of cured Vanilla planifolia. Coffee and cocoa rub: established steakhouse practice.Ingredients
- 2 tbsp flaky sea salt
- 1 tbsp coarsely ground dark-roast coffee
- 2 tsp dark cocoa powder, unsweetened
- 2 tsp coarsely cracked black pepper
- 1 tsp smoked paprika
- 1 tsp ground coriander seed
- 1 Ox & Orchid vanilla pod, dried and ground (about 1 tsp)
- Optional: ½ tsp chilli flakes
Method
Dry the pod hard. A spent, scraped pod is ideal (see № 08); a fresh one works but wants 20 minutes in an oven on its lowest setting, door ajar, until it snaps rather than bends. A supple pod gums the grinder and clumps the rub.
Grind the pod together with the coffee. Doing them together stops the vanilla sticking to the blades, and the coffee's grit does the cutting.
Stir everything together. Keep it coarse. This is a crust, not a dust: if it looks like powder you have gone too far.
Store it in a sealed jar away from light. It is at its best in the first month and honest for three.
To use on dry-aged beef: pat the steak bone dry. Oil the meat, not the pan. Press the rub on firmly and no more than an hour ahead; salt draws moisture, and a wet surface will not crust.
Cook hot and fast: over wood or charcoal if you have it, cast iron if you do not. The sugars in the cocoa and the vanilla will catch, so this is a rub for high heat and short contact, not for a two-hour smoke.
Rest it for half the time you cooked it. Finish with vanilla brown butter (№ 06) if you want the argument made twice.
The grader’s note
The whole discipline is restraint. One pod through this much rub puts roughly a quarter of a gram of vanilla on a steak, and that is enough. It will not read as vanilla; it reads as the roundness that makes people assume the beef was aged longer than it was. The moment anyone identifies it, you have failed. It is also why the vanilla is ground rather than infused: on a crust you want it in the Maillard reaction alongside the coffee and the cocoa, not floating above it. And if you are cooking over wood, remember that the fire is already adding vanillin. You are not introducing a stranger; you are turning up something that was always there.
Made with
Grade A Indonesian planifolia.
Every recipe here is written for a real bean: graded, signed, and sold by weight.