Yes. Damaged or crushed grapes.
From "Bible Wines and the Laws of Fermentation" by William Patton --
" Lo, this have I found," saith the wise man (Ecc. vii.
29), " that God made man upright, but they have sought
out many inventions."
The things created for food, and which are to be received
with thanksgiving, are those which are in their natural and
wholesome condition, and which nourish and strengthen
the body, and not those which are in the process of decomposition.
Rotten fruits of all kinds are rejected as
innutritious and unwholesome. So also are decaying
meats. It is a strange perversion of all science, as well
as of common sense, to rank among the good creatures
of God alcohol, which is found in no living plant, but
which is to be found only after the death of the fruit, and
is the product of decomposition.
portionate to the degree of injury it had sustained ; the sound parts
of each continued unchanged."
"4. The grapes were now removed from the flasks, and the juice
expressed from each. The juice from the bruised grapes had not
an alcoholic, but a 'putrescent flavor. The juice from the sound
grapes was perfectly sweet.
"Both these juices were placed in tightly corked phials halffilled,
and subjected to a proper fermenting temperature. It was
three days before the commencement of fermentation, in each,
was indicated by the evolution of carbonic acid gas, as also by the
color of the alcohol, and of the aromatic oils always generated in
such cases. I, therefore, still believe it to be a fact that grapes do
not produce alcohol ; that it can result only where the juice has
been expressed from them, and then not suddenly ; and that, where
the hand ofman interferes not, alcohol is never formed."—8. Spence,
Chemist to the Yorkshire Agricultural Society; F. R. Lees, Appendix
B, pp. 198 and 199.