Instructions Click buttons. You can upgrade. You can also buy a cooker/chef. You have a money bar on the left side (<-this side). It keeps track of the money. If you upgrade your restaurant by 2x you can click the money and gain it a lot more faster + with the regular upgrade restaurant button.
Thanks to malkhom for the original project restaurant clicker [forever unfinished]. Try both games. Their the same. I don't upgrade the games really often.