Consider this to be in the strange but true category!
Thanks to the tip from Freeper.
"Scientists test substance found buried with warrior and his sword in 221BC"
"What is the 2,000-year-old brown mystery liquid found in ancient Chinese tomb? Scientists test substance found buried with warrior and his sword in 221BC"
THE PROVERBIAL ANCIENT CHINESE SECRET? IT VERY WELL MIGHT BE?
Bronze ware within which the mysterious liquid substance was found. Bronze a good choice as a container. Bronze can last a long time under the right conditions. Substance as contained within relatively fresh?
"More than 3 litres of mysterious, brownish liquid was poured out from a hole." That IS a considerable amount of liquid lasting for over two thousand years.
"Though members of the public have speculated the vessel may have contained some early form of grain alcohol, Mr Yan’s institute said it has invited experts from Chinese capital Beijing to test the substance before confirming anything."
SOLDIERS TRADITIONALLY ALWAYS THOUGHT TO BE HEAVY DRINKERS. INTOXICATING BEVERAGE.