
Go to the KITCHEN UPGRADES window and upgrade the following item once: BBQ SMOKER Serve 50 brisket meat dishes to your customers *This was the number displayed when the star threshold was crossed on a level.

Unlike kitchen upgrades, which go into effect as soon as you pay for them, interior upgrades can take anywhere from 30 minutes to 9 hours to upgrade. It also provides an option for extra customers which is the most expensive upgrade. Interior upgrades increase a customer’s wait time, tip time, and tip amount.

Additionally, kitchen upgrades increase the price per portion of food.

They also increase how many portions can be prepared at one time. Kitchen upgrades increase how quickly machines cook food or refill beverages.
