Brussel Sprouts

I have been trying to recreate the Brussel Sprouts I had at Delarosa's in San Francisco (http://www.delarosasf.com/) ever since my friends introduced me to them. They have a wonderful aioli to accompany the brussels but I haven't quite figured it out yet. The one I made was with parsley, lemon juice, garlic and mayo.  I roasted the brussels in the oven at 350 degrees for about 30 minutes with a little olive oil, salt and pepper to taste.  The brussels turned out wonderfully but still need to work on the sauce! I also used my new knife my brother gave me for Christmas to chop the brussel sprouts in half - worked wonders.