If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The client's order appears on the order screen. A regular order means that all the ingredients must be used on the log. Some clients might request one or more ingredient less than the regular recipe. Watch out Vermin! Squash them with your spatula to avoid them from stealing your meat logs. You have 2 minutes to feed at least 3 clients! Get to work!