Spices

       Spices are a big deal to we humans. No wonder there were many trade routes to Europe from Asia to bring spices to the people there. They were willing to pay for them when they figured out they could get them.

            Here's one wiki leak that might help you:              http://en.wikipedia.org/wiki/Spice

            And there are many more links, too.

            As for me, for instance, making some broth during hard times is often enhanced by use of some spices.