Luther on substituting of wine in the supper

“When somebody inquired whether, when a sick person wished to have the sacrament but could not tolerate wine on account of nausea, something else should be given in place of the wine, the doctor [Martin Luther] replied, ‘This question has often been put to me and I have always given this answer: One shouldn’t use anything else than wine. If a person can’t tolerate wine, omit it [the sacrament] altogether in order that no innovation may be made or introduced.'” — Martin Luther, “Table Talk” (Luther’s Works 54:438)