These are also really convenient for a cold brew. Cheap, chopped up leaves so that the extraction time is shorter and there’s no need to pry a cake and/or weight anything. I made use of that on Saturday and on Sunday I had a liter of pu-erh to fuel me throughout the day as I was wandering around Toronto. To be honest, 10g/1l makes a fairly strong tea even when brewed just overnight like I did. Depending on the intended use and steeping time, one might want to adjust the ratio.