Reply To: Osso Buco at the seder Home › Forums › Decaffeinated Coffee › Osso Buco at the seder › Reply To: Osso Buco at the seder March 25, 2013 4:39 am at 4:39 am #941124 popa_bar_abbaParticipant Neither. I’m substituting matzah meal for flour, and probably nothing for the butter.