The pub boycotted all dishes containing beef earlier this month to 'save the rainforest' - after a plethora of media outlets linked the Amazon fires to cattle farming.
Exploiting the planet
"Our diet must change and we cannot continue to exploit the planet so unnecessarily," the business wrote on Facebook.
"There may be many other ways to reverse climate change - the fast-food industry growing food instead of meat for example, but let's be honest here and make no mistake. What 'mankind' is doing to the Amazon in order to feed beef to billions of greedy mouths is deplorable and though my business is not vegetarian or vegan I feel the responsibility not to sell beef as a statement, overwhelming."
Although the pub continues to serve lamb, chicken, and pork, it says it is in contact with plant-based meat companies - and cited vegan documentaries such as Knives Over Forks, Cowspiracy and Food Inc as having 'the facts'.
"I am excited to join the fast-growing movement of pioneering plant-based meat substitute companies such as Beyond Meat, Impossible Foods, and Moving Mountains, that are so cleverly infiltrating the fast food industry such as KFC, Burger King, and Greggs," the post continues.
"Who knows, maybe one day The Three Stags will be a vegan restaurant but in the meantime, I implore you to take an interest at least in what is happening out there, come and enjoy what we have to offer and embrace a diet without beef.
"If we don't look after the people who look after the land, there is no hope."
You can read the full announcement here