Agatha Christie - Murder on the Orient Express

Chapter 1

Takes place in the dinner scene shortly after the train departs for the very first time. You'll be seated at the table with Bouc. You'll first have to look around and observe and analyze a few characters. Dessert will then be served, and Bouc will remark that it's the best dessert he's ever had. Examine the dessert itself (not the menu) and make the following selections:

Lemon (ice cream)
Raspberries
Crushed Biscuits

Based on the other solution there might be multiple ways to unlock this, but this worked for me and is pretty simple.

Milk
Vanilla
Flower
Suggar
Orange peels
Eggs