Another name for Krakus is Inka. These have been around along long time. There are other chicory based coffee subsitutes but it all started with these two. Roasted dandelion root is also very yummy but to me tastes alot like Inka. There is also Techino, but its 3 times the cost.
To prepare these root, HerthElde, take 2 parts Dandelion root, one part burdock and one part yellowdock and add them to a medium sized pot of purified water. Bring to a rolling boil, steady but not too overwhelming, and allow to decoct for 20 minutes. Take off the heat and allow to stand covered for 20 more minutes.
Take a cup and add one teaspoon of Inka/Krakus. Enjoy its full flavour. Think how happy your liver is!
Another option as you are expecting: Take herbs such as Red Raspberry, Alfalfa, Comfrey leaf, Nettle Leaf, Strawberry leaf, Spearmint et al and brew a large infusion. Add some of the root tea to this.
Keep a container of each in the fridge and have occasionally as a cold beverage.
Or brew a thermos full and have warm throughout the day.
I tend to make a large root tea and have it over 2-3 days, keeping it in the fridge.