My friend is in Afghanistan serving as a Chaplain’s assistant for a Catholic priest. His priest does not have his own chalice for mass so he uses a Protestant minister’s chalice. I believe this is wrong and have ordered a complete ‘travel mass kit’ for this priest to use. Am I correct in believing the Precious Blood should not be in a chalice which is also used for a ‘grape juice’ ceremony?
Is there an ‘official’ rule on this?