A dangerous and offensive innovation?

A final extract from Mant's An Explanation of the Rubrics in the Book of Common Prayer . The Church gives no countenance to the mixing of water with the sacramental wine. Her authority for so doing, in King Edward VI.'s first book, was subsequently withholden, and has not been revived. To revive it now were a dangerous, and offensive, innovation. Mant's opposition to the mixed chalice may seem to represent a rather antiquated approach to Anglican liturgy. After all, what can possibly be wrong with a practice that has patristic precedent and which, as a result of later 19th century Anglo-catholic practice, has become quite common within broader Anglicanism? Two reasons come immediately to mind. Firstly, in rejecting the revival of the mixed chalice, Mant was standing in continuity with normative High Church tradition. Yes, examples may be pointed to of Laudian and High Church clergy using a mixed chalice (that is, water mingled with wine in the chalice prior...