Exploring exotic flavors in pastries

I’ve been experimenting with unique flavor pairings in my pastry recipes lately, and I’m curious if anyone else has dabbled with unusual ingredients. Recently, I tried using black garlic in a chocolate mousse, and it added a depth I never expected. What’s the wildest ingredient you’ve incorporated into a classic pastry?

‌⁠‍⁠​‍​‍‌⁠‌​​‍​‍​⁠‍‍​‍​‍‌‍​‍‌‍​‌‌‍‍⁠‌‍‌‌‌⁠​‍​‍​‍​‍⁠​​‍​‍‌‍‍⁠​‍​‍​⁠‍‍​‍​‍‌‍⁠‍‌‍‌‌‌⁠‌⁠‌‌⁠⁠‌⁠‌​‌‍⁠⁠‌⁠​​‌‍‍‌‌‍​⁠​‍​‍​‍⁠​​‍​‍‌‍‍‌‌‍‌​​‍​‍​⁠‍‍​‍​‍‌‍⁠‍‌‍‌‌‌⁠‌⁠​‍​‍​‍⁠​​‍​‍‌‍‌​​‍​‍​⁠‍‍​‍​‍​⁠​‍​⁠​​​⁠​‍​⁠‌‍​⁠​​​⁠‍‌​⁠​‌​⁠‍​​‍​‍​‍⁠​​‍​‍‌‍‍​​‍​‍​⁠‍‍​‍​‍‌‌‍‍‌​‌‍​⁠​​‌‌​‌‌‍⁠⁠‌‌⁠⁠​⁠‌​‌‍​‌​⁠​‍‌​‌‍‌‍​‌‌‌​​​⁠‌‌‌​‌​‌⁠‍‌​⁠​‍​‍​‍‌⁠⁠‌