The Abacus celeb chef will be showing off his slicin’ and dicin’ skills at DUO on Monday, Aug. 29. Each student gets to use and take home their own 8-inch Chroma chef’s knife designed by Porsche. Yes, it’s a bit pricey at $190. But you get a sweet knife and some very expert instruction from chef Rathbun. Sign up fast. The class is limited to 15 people.