So Flavorful

The 19th-century "gold rush" for phosphate rock---guano used in fertilizer--has run its course. The reserves of South Sea islands like Nauru and Papua New Guinea (PNG) are largely depleted, and it behooves Americans to support these nations as they try to replace guano exports with agricultural products like coffee.

At Costco I picked up a couple of pounds of PNG coffee, which tasted rich and complex. I wonder what ingredient in the soil makes it so flavorful.....