Wood will expand and contract across the grain, and a wide panel made of solid wood could change width by a half of an inch, warping the door frame. By allowing the wood panel to float, it can expand and contract without damaging the door.
Put trimmed and cleaned green beans in the steamer basket, set over the boiling water, cover, and steam until tender to the bite, 3 to 5 minutes (depending, again, on how crisp or tender you like your green beans).
Put three cups of rice in a very large pot. Cover it with two or three inches of tepid water and let it soak for at least six or up to 24 hoursâthe longer, the better. Drain the soaked rice and pour it into a steamer basket. Boil two or three inches of water in a wok or large pot and set the steamer over it.