Dandelions can be used for coffee two ways: it can be added to coffee (like chicory) or used alone as a coffee-like substitute.
Step 1: Scrub roots, drain and place on a baking sheet. Step 2: Roast at 150 F until roots are dark and dry (about 4 hours). Step 3: Cool and grind roots with food blender. Store in covered jar until used. Step 4: Add 1 heaping teaspoon of roasted roots to 1 cup of water. Steep for 3 minutes. Strain and serve. Add cream and/or sugar to taste.
Step 1: Follow Steps 1-3 from above. Step 2: Brew coffee as usual, adding 1 teaspoon of roasted roots for each 6 cups of coffee. More or less root may be used depending on taste.