Vegetables steamed in the microwave take less than 5 minutes to prepare. (More on my eating habits: http://blog.tasuki.org/how-i-didnt-stop-eating-food/)
I think eating only Soylent exposes you to a significant risk of missing something vital that we usually get incidentally from regular food.
How the hell does it take 15mins to prep scrambled eggs? It should take less than 5 and your cleanup should take all of a minute
1. Put Small/medium saucepan on stove
2. Add 1/2 Tbsp butter
3. Crack 2 eggs into pan (Do no beat beforehand)
4. Put pan on mid-low flame and stir briskly for 2-3mins or until eggs are at a runny-curds texture (soft but "together").
5. Plate
And as jack-r-abbit suggested, I do like to chop some onion/peppers/tomatoes into scrambled eggs. I'll time it and try to get under 10 minutes next time!
1. raw/fresh food 2. general fitness every day 3. intermittent fasting once or twice a week
Food has a lasting effect on the body, some of which science is yet to understand, I'll stick with what I can hunt and pick from the wild.