Still devastated that I didn't realize there were Ladurees across London; however, I found out in…read morethe nick of time that there was one right around the corner in Heathrow Airport! I came very close to losing my mind right there, but instead focused on the practicalities of flavor, ingredients, and how to take a picture without being noticed.
I selected a Marie Antoinette tea macaron. It was not my first choice, but the signage was helpful enough to indicate which flavors contained gelatin - an ingredient I avoid when possible. I am so glad I chose the Marie Antoinette! It was beautiful, delicious, and the most perfect introduction to the world of authentic French macarons.