Another option is the 2-cup Oxo fat separator. Also plastic, it features a strainer on the top and a shield to prevent gravy from spilling out, and it has a stopper to keep fat out of the spout. Last but not least is Williams-Sonoma's gravy separator, which looks somewhat like Oxo's, but is made of microwavable, oven-safe glass; it comes in 2- and 4-cup sizes. Some Williams-Sonoma reviewers love the glass, but others complain that it breaks too easily. All three of these fat separators are dishwasher-safe.