Use a natural, unbleached fabric to avoid chemicals being transferred to your coffee. This tutorial is for the cone shaped filters, not the basket shaped ones.
To wash a reusable coffee filter, simply dump the contents into the trash or compost bin, then rinse the filter under tap water. Lay out to dry on a clean surface with air circulating beneath. It dries very quickly and is ready to use again the next day. However, having two is probably better, so that you can rotate them. Since it’s cotton, you can also machine wash and dry it if you want to. [2] X Research source Just be sure to use an all natural laundry detergent to avoid harsh chemicals remaining on your filter and making it into your coffee! Also, if you use a scented detergent, that may affect the flavor of your coffee, and equally, avoid using dryer sheets and fabric softeners; they can add chemicals to your filter, so don’t expose your filter to them.
