Take the customer's order... Cook the meat how they want it prepared, put the toppings on in the correct order, and deliver it to the customer. If all goes according to plan, you will receive a big tip once they get their food.

As the game goes on it gets progressively more difficult. More customers lining up, more complicated orders, it can be a lot to deal with. Use your tip money to purchase upgrades around Papa's Burgeria to help deal with this. You can get posters to make customers wait more patiently, timers to keep track of when meat is done cooking, and even a gumball machine!