Yep, that’s Le Creuset. Good eye!
The cooking was done covered.
I’ve done the corned beef with a few different, relatively mainstream beers, and they all seem to work. The first time I did it, I used Kirin. It was good, but salty...but that first time, I didn’t soak the meat first.
The results for this method are consistently moist & tender. I can’t recommend it enough. I have lived most of my life hating corned beef, only making it for my Mom, who loves the stuff. I steamed it, I baked it, etc. When I hit upon this idea and served it to her, she stopped after one bite and demanded I try it. I asked her what the problem was. She said that it was some of the best she’d ever had.
I'll keep the recipe in mind. This is a time of year when it's easy to find beers that aren't hops-focused--Oktoberfest-style lagers seem as though they'd play well here. I'm haven't been a big fan of corned beef heretofore, but I'll try it--especially if my wife thinks it seems like a good idea.
As for the Le Creuset, my wife had a couple of their dutch ovens (3-ish and 7-ish quarts, as I think of them) as wedding gifts from a previous marriage. We love them and use them a lot. While they are worth every penny, they are expensive enough that I was happy not to have to pay for them.
