How do I know how much grounds I should put in the machine?
Most of the filters included with the single-serve coffee machines have fill lines on them, which makes it easy to add in the proper amount of grounds. If there is no fill line, you may need to try out different amounts, though be sure not to overfill the filter. This could lead to overflowing when the brewing process starts, so it’s best to keep the level below the top of the filter.