We would like to recommend using Medium-Fine grind size coffee grounds to extract.
The Medium-Fine grind size is a staple grind size, with texture like table salt.

Fine grind size is acceptable, but not recommended. It is finer than table salt and it's typically the size of most pre-ground coffee.

Here are the reasons why we recommend Medium-Fine ground coffee.

• Easy to clean.
  Fine grounds might block up the filter basket. However, coarser grounds would not have this problem, simply rinsing the filter basket would be super clean.
• Excellent coffee.
  It won't require much effort to extract espresso with Medium-Fine grounds. However, using Fine grounds might require more pressure and time to brew.

If you unfortunately miss some accessories, could kindly contact support@staresso.com to purchase.

There is one-year international warranty for all products.