There are a few ways of increasing the number of coins you receive:

• Upgrading dishes in the Shop: with each upgrade, the price of a dish increases.

• Fast service and tips: customers' patience level plays a key role. A customer with a high patience level will leave you a tip for fast service.

• Combos: try to make combos as often as possible. A big combo will earn more coins than a small one. Practice making big combos to increase bonus coins.