acetous , also: acetose

Red fruits are more acetous, yellow and orange fruits are sweeter.

Whose small soul, transparent wholesome-looking as small ale, could by no chance ferment into virulent alegar,--the mother of ever new alegar; till all France were grown acetous virulent?

But of all the writers to take up the matter, perhaps none approached the subject with more rigor than Poe, who even went so far as to share his thoughts on postmortem stomach gases produced by the "acetous fermentation of vegetable matter."

But, apart from decomposition, there may be, and very usually is, a generation of gas within the stomach, from the acetous fermentation of vegetable matter (or within other cavities from other causes) sufficient to induce a distension which will bring the body to the surface.

It is then very pleasant and refreshing, but in a few hours after sunrise a great charts takes place, and the rapidity of the transition from the vinous to the acetous fermentation is so great that by midday it resembles a poor and rather acid cider.