After looking for it for weeks I can safely say there is no tea at all in Eldevin.
For a UK based game this seems like a rather huge oversight.
How on earth can a game survive without a proper cup of tea?
Therefore I suggest the Cows introduce tea to the game.
The easy (but boring) way would make the shopkeepers sell tea alongside the water and beer they are selling.
A much more interesting way would be a quest that makes you make your own cup of tea.
First you get some materials to make a cup or glass. Peter the glass maker in EC can help us with that.
Next we grow tea at a farm. Tea can be low level because everyone should have access to it.
Then we get some water (from a well) and boil it. This can be done at the cooking area or the alchemist. And now we add the tea to make a proper cup of tea. Depending on the tea we may add milk (cooking ingredient) or lemon juice (alchemy ingredient) to it.
Last but surely not least, we share the proper cup of tea with our friends.
And since a cup of tea a day isn't too much to ask this quest can be a daily one.
The reward of making, drinking and sharing this cup of tea may be a few artisan awards and a nice group buff. Or something equally nice that the Cows think of.