How much kvass to drink a day?

Excuse me, I was wondering if you could possibly shed some light on the matter of daily kvass consumption. Specifically, I'm curious to know how much kvass one should ideally drink in a day. Is there a recommended amount, or perhaps a limit that should not be exceeded? I understand that kvass is a traditional beverage enjoyed in many cultures, but I'm unsure of its proper consumption guidelines. Could you please provide me with some insight on this topic? Thank you very much for your time and assistance.