The best new Thanksgiving side dish is the one that never sees the oven

Most Thanksgiving side dish recipes share a flaw. They assume you have space in the oven. On the fourth Thursday in November you probably do not. A turkey has it, at a fixed temperature, for most of the day.

That one constraint makes a useful filter. The sides worth adding are the ones that cook somewhere else.

Green beans do better in a skillet than in a casserole dish anyway: blanched briefly, then finished in butter with shallots and a squeeze of lemon. Red cabbage braised slowly with apple, cider vinegar and a little brown sugar holds on a back burner, and most cooks find it improves if you make it two days ahead.

A raw dish earns its place for the same reason. Shaved fennel, tart apple and celery with a mustard dressing needs no heat at all, and it cuts through everything else on the plate. An uncooked cranberry relish — berries, a whole orange and sugar, pulsed in a food processor and left overnight — takes five minutes and no burner.

Mashed potatoes hold for hours in a slow cooker set on low. And there is one window most cooks forget. A turkey has to rest at least twenty minutes before carving, and a large bird longer. The oven sits empty and hot that entire time, which is room for exactly one dish. Save it for the thing that genuinely needs it.