A food mill is a nifty manually powered device useful for puréeing foods. It's very effective for separating seeds from the liquid. It looks like a wide-mouthed bowl with a handle and a manual crank. It has legs to hold it steady over a bowl/pot while you're turning the knob. The bottom of the bowl is a sieve, allowing the liquid to drip through. I used a Foley brand food mill for over ten years before it needed replacing. I bought a new Foley, but immediately brought it back because it was leaking machine oil into my tomatoes! Not cool. I then purchased an OXO food mill, which I am very happy with. I love the foldable non-slip legs, and cushioned handle. If you are in the market to buy a food mill, look for one that has a stainless steel (not aluminum) bowl.