Complex sentence: David Sheinkopf is a rabbi who has been active many years in the field of kosher supervision, Rabbi Sheinkopf specializes in the use of different types of kosher gelatin and carmine, also, the use of legumous extracts in Passover foods.
Split into simpler sentences: David Sheinkopf is a rabbi who has been active many years in the field of kosher supervision. He specializes in the use of different types of kosher gelatin and carmine, also, the use of legumous extracts in Passover foods.