A clay like substance with a rocky exterior look, good for dinosaur fossil themed decor.
It is fun to make, smells nice and is malleable like playdough.



  1. Mix the dry ingredients (flour, salt and coffee grounds) together thoroughly.
  2. Add in the cold brewed coffee slowly, while mixing the clay
  3. Let the clay dry, drying time varies.
  4. If instant results are necessary, bake the substance for 5 to 10 minutes in 350 degrees. This will make them solid.