The Cotswald cottage does not serve food in the winter because the Village is not open in the winter. Only the museum.
The Cottswald is a fantastic spot for tea or finger sandwhiches. It is not over priced.
All the food at The Village and the museum is pretty darn good. The chef there works with local farmers so it's a very nice departure from what many might expect.
There is a small southern restaurant at the train station called Mrs. Fishers Southern Cooking. The Catfish and the BBQ there is VERY good.
Don't pass up a real frozen custard at the custard stand on a warm day.
We were there recently and were told the Cotswold Cottage does not serve tea in the winter. We stopped in at Eagle Tavern instead and thought it was fun and cozy. Only had a beverage and a slice of apple butter custard pie (like pumpkin pie but flavored with apple butter instead) that was quite good.