Hosts are made from altar bread, a mixture of water and flour that is heated between two hot plates. The cuttings from real Communion hosts, however, are sold at monasteries. These are just replicas! Nevertheless, the short ingredient listflour and watermake these a great snack low in fat, salt and sugar. Hosts are made from altar bread, a mixture of water and flour that is heated between two hot plates. The cuttings from real Communion hosts, however, are sold at monasteries. These are just replicas! Nevertheless, the short ingredient listflour and watermake these a great snack low in fat, salt and sugar.Hosts are made from altar bread, a mixture of water and flour that is heated between two hot plates. The cuttings from real Communion hosts, however, are sold at monasteries. These are just replicas! Nevertheless, the short ingredient listflour and watermake these a great snack low in fat, salt and sugar.