This recipe makes a very rich risotto. It was designed around the use of Midas Touch, a Dogfish Head beer made from a mix of fermented barley, Muscat grapes and honey, then spiced with saffron. So, using that particular ale is key. Though, if you can't find it, any Belgian Pale or Wit plus a pinch of saffron would suffice. Like all risotto, this is a bit time consuming, but it's worth it.
The Rouille is not in any way a traditional Rouille, so please don't take offense to my use of the word. The real stuff is just so unhealthy, I wanted to get similar flavors without so many calories.