Reply To: Is Laboratory-Grown Hamburger Kosher? Home › Forums › Kashruth › Is Laboratory-Grown Hamburger Kosher? › Reply To: Is Laboratory-Grown Hamburger Kosher? August 6, 2013 7:06 pm at 7:06 pm #969848 Sam2Participant Oomis: The only way someone could have considered potatoes Chametz Gamur is if they didn’t know what a potato was.