How to use a reusable K cup filter These refillable ... you can buy whole coffee beans and grind them yourself. I find that when it comes to the grind size, you want it to be as small as possible.

Then I found the My K-Cup Universal Reusable Ground Coffee Filter. It's an inexpensive reusable coffee filter that fits any Keurig-brand at-home coffee machine, so you can use it however many ...