So... I usually bring a scoop of Perpetuem for every 15 miles i plan on riding. I've never gone through it all before, but it's nice to know it's there.
I started out with a big ziploc bag, but last week that bag broke, my powdery stuff was all over the inside of my bag, and i had to scrape from the bottom of my bag to make a bottle. Boo.
i could bring it in a small canister,but that wouldn't collapse as i empty it, which is sort of a pain.
So, all you experienced randonneurs (Machka!), how do you carry your beverage?