Bone broth contains collagen precursors — but evidence that oral collagen improves joint health is limited.

Sourdough bread is made from a 'starter' — a live culture of wild yeast and bacteria that can be maintained for decades.

Umami, the fifth basic taste, was identified by Japanese chemist Kikunae Ikeda in 1908 from kombu seaweed.

The first junk food, cotton candy, was invented by a dentist in 1897.

Sriracha sauce is named after the coastal city of Si Racha in Thailand, where a similar sauce was first made.

Diamonds are not the rarest gem — alexandrite, painite, and red diamonds are far rarer.

Wasabi is so difficult to grow that most wasabi served in restaurants is actually dyed horseradish.

Coffee is the world's second most traded commodity after oil.

In Japan, Kit Kats come in over 200 flavors, including wasabi, green tea, sake, and sweet potato.