Cold brew pot has arrived: written instructions are in Asian languages only. Google is my friend, only took a minute to download the proper English documentation. Mine is a 1-litre pot, which will apparently need 1180 mls of filtered water for the brewing process. Why the excess? Because 80 grams of coffee absorbs the excess.
The end result is supposed to be a concentrate able to make 8 cups of coffee. Doesn’t say how big those cups are.