Heracles' Lunch

Disliking the drink set before him, he struck Cyathus, the cupbearer, with one finger only, but killed him none the less.
— Robert Graves
A cup-bearer killed
for a disappointing sip.
The host's three sons slain
for serving the wrong
portion of the beast …
Lucky that only Heracles
behaves like a hero
at the table.
Four dead before
the meal is underway …
What's for dessert,
and who will serve it?