Hello! Thank you so much for playing! The reason you can't serve the drink is that you need to put a lid on the cup first:
You can see a demonstration of all the features by clicking on this book:
Good luck, and thanks for the comment!
Thank you so much for the reply! Wow that totally went over my head; I checked the book beforehand but for some reason I skipped the very last second 🫠 I will continue to play and post my gameplay soon! ❤️