As temperance was just beginning to take off, and people were substituting raisin water, and other elements for wine, we actually do have history of the discussions. One such example is William B. Sprague.
The complete sermon he preached entitled "Danger of Being Over Wise" was preached on June 17, 1835 at the Second Prebyterian Church in Albany. It covers the trend at that time to leave the fermented wine and go to a new element. Throughout the sermon, Sprague calls this an "innovation." Sprague was not a Baptist, so far as I can tell, but I submit this to you as an example of the fact that using anything other that real wine at the feast is an innovation.
The Danger of Being Overwise
William B. Sprague wrote in August of 1835 these words, "I appeal to ecclesiastical history in support of my position. I have never seen an intimation in the history of the Christian Church, nor heard of an individual that had, that the unfermented juice of the grape was ever used in the sacrament of the Supper. At any rate, it has not been used in our day, nor in the days of our fathers, or our forefathers, to any period of antiquity to which we can go back. Now I ask whether this is not a most speaking silence in ecclesiastical history, in favor of the conclusion that it was never used at all? If it had been the beverage with which Christ instituted the ordinance, and especially if it had been wrong to use any other, is it not marvellous indeed that fermented wine should have been introduced, and yet no record remain of the unhallowed innovation? Various other innovations in reference to this ordinance are distinctly marked, but to this no author that I have heard of even alludes. Could this have been so, if such an innovation had ever occurred? And if it did not occur, was not fermented wine originally used in the communion?"
From an article by Greg Wills on Baptists,
"They made a distinction between the church and congregation—they invited members of the church to the table and they invited the congregation to stay and observe. Baptists visiting from other churches usually participated (they called this 'transient communion'). They usually took the bread and wine in their pews. They used fermented wine until the late nineteenth century, when some Baptists began to use grape juice, or as they called it, 'unfermented wine.' They used a common cup. In the early twentieth century churches switched to the use of individual cups."
There are so many books on Baptist doctrine and history that demonstrate that Baptists all used wine until the latter part of the nineteenth century. I am surprised it is not simply a universally agreed upon reality.
I am always shocked to see that prohibitionists and teetotallers have rewritten history to the degree that they have. If wine was not used before there was pasteurization, then what was? There are only two choices: 1) the feast was held once a year during grape harvest, and the juice was fresh-squeezed and 2) raisin water was used.
To settle this discussion, I request that you look into your own church history. If there are any old churches in your area, or if you belong to one, check out their past. Most of the churches in our fellowship continued to use wine up until the 1950s. You will too find what I found, that churches historically have used wine. It is really no secret history.