Good pears are starting to become difficult to find. Apples are also out of storage. The best all around apple for baking and salads is Sierra Beauty. Fuji's would be a good sub for the salad but not for pastry, as Fuji's do not bake well. Pomegranates are on the way out as are Persimmons.
Winter means lots of hard squashes, roots and all forms of cabbage.
Winter squashes such as kabocha, butternut, acorn, delicata, spaghetti and sweet dumpling are abundant. Roots such as carrots, rutabagas, turnips, parsnips, all sorts of radishes, and beets are all staples during the cold dark months of winter. The cabbage family is large and include not only red, green and savoy cabbage but broccoli, broccoli rabe, gai lan, cauliflower, brussel sprouts, collards, and bok choy. Chicories such as frisee, endive, raddiccio and treviso also grow best under cool conditions. Leeks, bulbs such as fennel and Mushrooms love damp weather so are popping up everywhere.