During WWII, the U.S. was rationing food supplies for civilians. You needed a coupon to buy certain items. Coffee was one of those itmes. Almost everyone drank coffee and or milk, so to stretch their coffee, they would use chickory, grind up the roots and mix with their coffee. Chickory grows mostly along roadsides and has tiny small blue flowers on it. Some drank the chickory by itself, not having any coffe to mix it with. The shortage of coffe,tea and some spices were due to not being able to ship acroos the ocean because of submarines sinking most cargo as well as military vessels. Good Luck. rockhound