First I never go to the supermarket to buy beef its never aged and almost always tough. No mater what cut you can make it good if you season it well and cook from room temperatureand let it rest for about 5 to 7 min. Its worth it to pay a little more to buy from a butcher.
It depends where you live. I'm up in Aurora and although there are indy butcher shops, at present the Longos can't be beat unless I want to head to Markham.
Ok, fuck off. JK. I appreciate the tip, although I only use sea salt and a bit of black pepper on my steaks, so if I put salt on too early, it tends to toughen the meat a little. Also, I like to start it on the barby to sear in the juices so they don't all leak out in the oven. Maybe pan-searing it very quickly would do the trick. You'd have to find a big enough pan, though. I'll try it your way, but I think I'll make a sauce from the pan drippings and some roasted veg. It's an expensive cut to experiment with but it should be awesome, basically slow roasted and grilled prime rib.
Also, if you don't care about having the long tomahawk "handle", get the butcher to cut it off to save a little.
So you don't have to experiment, I went shopping and bought a tomahawk @ Longo's. They were on sale for 12.99 so I bit for the 3lb'er and yes I got them to trim the bone about 3 inches, although they mad me pay for the full.
Salting a day before (24hr) imho is the best way to go. If its wrapped up tight in saran wrap the osmosis effect will pull out the moisture, mix with the salt and then the beef will pull the mixture back in. Again my 2 cents.
If your oven goes down to 170 (or 150 even better) other than the butter thats slathered all over you will get very little pan drippings even if its in there for 4-5 hours. That low a temperature will bring the temperature up, soften the fat but not really render it, so 90-95% of the juices will stay inside.
I have taken some pictures like those d-bags on other forums that show progressions.
The steak
The salts...no pepper
I forgot to show a pic of the steak salted.....LOT's of salt. The big flaky soft stuff
Wrapped up in saran wrap
And in my beef fridge...peep my Himalayan salt blocks.
Tomorrow I will post pics of the buttering phase, post oven, and post charcoal blast.