content: This tool is a must-have for preparing mashed potatoes. It takes all of the effort and lumps out of making perfect mashed potatoes.A little bit of potatoes can squeeze out from the top of the lid as you push it down (which is why I only gave 4 stars) but since the gap is so narrow, what squeezes out is also "mashed" so it can be thrown in with the rest of the potatoes.My girlfriend complained that it is a little hard to squeeze when packed to the rim with potatoes, but this can be controlled by putting less potatoes in it each time.Overall an excellent product. Very easy to clean.