Rabbi Levi Landa rolls out matzah during a demonstration at Chabad of Greater St. Louis’ Model Matzah Bakery, held at the Jewish Community Center. Looking on are (from left) Peggy Umansky, Julie Eisenberg, Dr. Susan Scribner, Annis Harris and Jay Umansky.  Landa, Chabad’s Director of Programming, demonstrated the steps involved in creating matzah, from grinding wheat into flour to the crucial 18 minutes to mix, roll and bake matzah after flour and water are combined. Photo: Lisa Mandel