I wonder what McDonald's uses to flavor their coffee. In Canada it has a very distinct taste unlike any coffee I've had. It can not be pure coffee in my opini

I wonder what McDonald's uses to flavor their coffee. In Canada it has a very distinct taste unlike any coffee I've had. It can not be pure coffee in my opinion. It claims it is 100% Arabica beans but it is so consistent and distinct. I wonder I fit does the 100% pure orange juice "trick" by processing parts of the Arabica beans into flavor chemicals and reading it.