I often prescribe herbal teas that need to be drunk at least twice a day and I know how difficult it can be to do that when you have to prepare them or if you are on the go. This is where flasks or a Thermos comes in so handy - prepare everything in the morning, take it with you, drink it throughout the day - easy.
This past weekend I was determined to do a mini herbal cleanse and I knew it wouldn't happen if I didn't prepare (practitioners are sometimes very bad patients). This monster is 1.9L (9 cups or about 13 teacups if you're feeling fancy). Not handbag friendly but for my purposes it was perfect. Yes, I peed a lot #TMI