Instant mashed potatoes. The Idahoan brand comes in many different flavors.

Ramen are already cooked and can be eaten cold, with your favorite spread or not.

Most important for me, rolled oats are parboiled in processing and do not have to be cooked any further. Soak them or not, it's a matter of taste and time.

I've been a stoveless hiker and bike tourist for 15 years now and am sold on the travel style.