It's November at Los Angeles farmers markets, where the stalls have been looking particularly festive for weeks now. Pumpkins. Swan gourds (the folks at McGrath Family Farm say they're decorative more than edible, but you can cook them if you really want to). Pomegranates. Also look for Satsuma mandarins, Brussels sprouts and persimmons — and, given the cool rainy weather — stinging nettles and lamb's quarters. All of which sounds pretty appropriate for this week's Thanksgiving dinner menu.