From Unofficial Stationeers Wiki
|Cost||50g (10%) of Flour|
Cereal Bars can be crafted using a Microwave using 50g Flour (10 wheat plants). Each bar restores approx. 60% hunger, while 10 raw wheat restores 100% hunger.
When the right button is held, only adequate part of cereal bar is consumed to fill hunger up to 100%.
Percentages of it can be eaten by holding down and releasing the right mouse button.