Wild guess: It holds two bowls. One has a small opening in the middle and sits around that wooden thing. The second one is larger, with a larger opening in the middle, sort of like a ring mould for gelatine, and sits around the smaller bowl. It could be for decorations or for serving something, like candies or other small items of food. Maybe the inside bowl is for small food items and the outside circle is for a wreath. Maybe the inside bowl is for a dip and the outside bowl holds the chips, crudités, or whatever for dipping.