I love to deep fry in my wok and this item is just perfect for storing used cooking oil. It is made of stainless steel and is sturdy and easy to clean. Just wipe with a paper towel and put it in the dishwasher. I use a small coffee filter to filter the oil, and it fits nicely on top of the included strainer basket, see picture. After the oil cools and the solids settle out, I use a small ladle to transfer the oil into the filter, skimming the clean oil off the top. This keeps the solids out of the filter and the oil, and are later removed from the wok with a paper towel. The grease keeper is great for keeping the dirty job of recycling my cooking oil much cleaner and easier.