Note 472 — MINERAL POISONS. (continued 4)
Reading edition
“I apprehend that the peculiar flavour of cogniac depends upon the presence of an æthereal spirit, formed by the action of tartaric, or perhaps acetic acid upon alcohol. It is on this account that nitric æther, when added to malt spirits gives them the flavour of brandy.” Pharmacologia, vol. 2, p. 396.