Broccoli: Frozen vs. Fresh

This just in from the freezer aisle: Frozen broccoli may not
measure up to fresh, because it lacks the enzyme myrosinase,
which helps create an antioxidant that fights inflammation and
cancer. But don't ditch your subzero staple just yet. You can get
these nutrients back by pairing it with a food rich in myrosinase,
according to a University of Illinois study. We like it with radishes,
mustard, and arugula.
-Prevention Magazine, October 2013