Stir-Fried Tri-Tip with Radicchio and Watercress

I am obsessed with this Stir-Fried Tri-Tip with Radicchio from The Cook & the Butcher . I almost didn’t make it because it sounded so strange. Who uses radicchio in a stir fry? I’m glad I did it anyway. The bitterness of the radicchio mellows when saut├ęd with the shallots and butter. (If you’re doing…