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have been fermenting
  • present perfect progressive of ferment.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He says this is because Mexicans have been fermenting agave for generations, and are therefore more familiar with the plant and its particularities.

From BBC • Jun. 22, 2022

A walk through the chef's kitchen reveals no less than 10 crockpots full of black garlic, some of which have been fermenting for weeks.

From Los Angeles Times • Mar. 14, 2018

For ages, farmers have been fermenting all types of surplus fruit.

From New York Times • Aug. 18, 2017

The great interior sea, epicontinental, the geologists call it, seems to have been fermenting and laboring for untold aeons in building up these parts of the continent.

From Time and Change by Burroughs, John

For years the controversy may have been fermenting in the college of presbyters at Alexandria.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" by Various