This mint condition card was produced by the Liebig Company in 1929 to help sell their meat extract. Here is definitive proof that Eris' apple was in fact beef flavored. It measures 11cm x 7cm.
Clicky on the pics for larger scans.
 |  |
| Front | Back |
If you could read French, here's what all those words would mean to you (thanks for the translation, TB!):
Front:
The symbolic apple. 2. Eris's apple. Meat extract from the Liebig Company.
Back:
Replacing expensive meat with something equivalent is every thrifty housewife's wish. If cheaper foods must effectively replace meat, it is necessary to add elements extracted from meat, such as one finds in the most pure form in Leibig Meat Extract, which represents what is best and most precious in meat.
2. Eris's Apple. Eris, the Greek goddess of discord was the only one among the gods not to be invited to the wedding of Pelee, King of the Myrmidons, and Thetis (parents of Achilles). She took vengeance by tossing a golden apple among the guests, with the note: "to the most beautiful."
Hera (Juno), Athena (Minerva), and Aphrodite (Venus) fought over the prize for beauty. The gods did not dare act as judges themselves. Zeus (Jupiter) decided to leave the decision up to a mortal, himself extremely handsome, the Trojan Paris. Aphrodite won.
We know that the consequences were the kidnapping of Helen and the Trojan war.
This mysterious little item was donated to us by the infamous Clippergirl.