[masraum]

Originally Posted by Flatbutt1

Hence the use of milk. The calcium will bind the oxalate and help prevent kidney stones.

Interesting. WHen I drink something like Earl Grey or English breakfast, I do add milk. If I drink one of the Asian styles, green, oolong, white, I don't.

a little googling

https://artfultea.com/blogs/wellness/oxalates-in-tea

Is caffeinated loose leaf tea high in oxalates?

Loose leaf teas produced from the camellia sinensis tea plant, including black tea, green tea, oolong tea, white tea, purple tea, and pu-erh tea, do contain oxalates. Black teas have the highest oxalate content, followed by oolong, pu-erh, and green teas, followed by white teas and purple teas. Studies are still being conducted on the relationship between caffeinated teas and oxalates.

Some studies suggest that drinking tea may play a role in reducing the formation of kidney stones. In particular, green tea may help to prevent certain kinds of kidney stones. This is usually attributed to tea’s high antioxidant content and the fact that it keeps tea drinkers hydrated. Research also suggests that taking your tea with milk can reduce the absorption of oxalates because of the calcium present in milk.

That said, because tea made from the camellia sinensis plant does contain a non-negligible amount of oxalates, we don’t usually recommend it for customers looking to adopt a low-oxalate diet. If you have any questions or concerns about whether a particular tea is safe for you, you should get in touch with your doctor.

For some heavier reading...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412450/
"Daily Green Tea Infusions in Hypercalciuric Renal Stone Patients: No Evidence for Increased Stone Risk Factors or Oxalate-Dependent Stones"

https://pubmed.ncbi.nlm.nih.gov/12495262/
"Oxalate content and calcium binding capacity of tea and herbal teas "