Hi, thank you very much for playing the game.
Normally you just press space when the pointer is over a green or blue stripe and then the cooking bar fills. The sprite for that isn't very good though so maybe I should just replace it with a "Press Space" text.
If you did press space and it didn't work then I'm terribly sorry, I haven't seen that problem occur in any playtesting.
It may be possbile that you ran out of methylamine, then you need to call Finger to get some more. I should make that more obvious though.