Who drank pearls dissolved in vinegar?

"Caligula's ingenuity for reckless extravagance exceeded all the spendthrifts of the past. He would bathe in perfumed oils, hot or cold, for a novelty; drink costly pearls dissolved in vinegar; served up unnatural feasts, with gold used in preparing the bread and meat, asserting that one should either be frugal or be Caesar...." Suetonius, The Twelve Caesar's, Book 4, XXXVII.

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