Boil the acorns for 20 mins approx.

After cooling them, remove the outer shell and cut or process them till you get small pieces.

Roast the pieces for 35-40 mins at 400 F, till they become dark brown in color while stirring them occasionally.

Process the roasted acorns or use a coffee grinder for the same.

Your acorn coffee powder is ready. Use 1 tbsp for every 6 oz of water for the best taste. Enjoy!