Eggs with hidden surprises

Exploration Stage: Moroccan Cafe
From: Ali Vazir
Description: The most common thing that person would ask for was a half-boiled egg. He ordered them to be boiled for as short a time as possible and always took the shells home with him when he was finished. I don't understand this behavior at all! I believe there were some shells left around here...if you can find them, I can show you what is inside.
Completed: Yes, this is it. It looks like an ordinary eggshell, right? But look here. There is a sketch of my cooking inside. That man did that without my permission! He was trying to figure out my complicated cooking techniques and steal my ideas.