If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
You are running a milkshake bar and you want to attract more customers! What should you do? Of course serve milkshakes to the customers as fast as you can and let people talk highly of you and your milkshake bar! Don’t keep them waiting and prepare what they want using the ingredients in your bar. Their wishes will get more and more complicated as your reputation grows! Prove yourself!