To the OP (original poster), you asked a simple question and got the correct answer buried a bunch of technical stuff I am sure you don’t care about but what people like to post. As stated above, after you have either plugged into a receptacle that matches your plug or started up the Generator you can operate your coffee pot or any other 120 volt appliance.
Have fun and don’t over think things. The comments that you earlier read related to useing an inverter to make 120 volt power while NOT plugged in. That is not your situation.