Before you change anything else, check your storage. If your beans are in a clear jar on the counter, move them to an opaque, airtight container in a cupboard. Keep them away from the stove, dishwasher, or any heat source. If you bought beans more than two weeks ago, this might be a freshness issue rather than a technique one.

Next, pull a shot and time it. If it runs faster than 25 seconds, your grind is too coarse. Go one step finer and taste again.