Most similar games are too easy to manage and try to overload the player with sheer volume / amount of tasks, this is way more about timing and keeping track of the clock.
I do however think that the time it takes to cook certain vegetables is somewhat long and it kinda makes you space out afer a while, but I do see why you would make longer times, since it forces you to multi-task but its possible to do orders one at a time, since you have a lot of time for the orders, even if you mess up a few attempts.
Good concept overall though, I was hooked for longer than expected!