Guest co-host Emeril Lagasse; Gretta Monahan; John Gidding. Also: Rachael makes carbonara.Guest co-host Emeril Lagasse; Gretta Monahan; John Gidding. Also: Rachael makes carbonara.Guest co-host Emeril Lagasse; Gretta Monahan; John Gidding. Also: Rachael makes carbonara.