In large glass container of choice add 1 cup ground coffee.  Add 5 cups cold (filtered if possible) water. Mix well

Chill in fridge for 12-24 hours.

Strain coffee through coffee filter and mesh strainer into another container. You may have to pour slowly a cup at a time so the coffee does not overflow the filter.  Let sit until all liquid is drained through.

You can rinse out original container and pour strained coffee back into original container to store in fridge.  Keeps up to 5 days in fridge.