The owner of our B&B recommended this place. In fact, when we turned up for dinner, we were amused to see her there, with her whole family.
The Yum Yum shack doesn't look like much - just a roadside restaurant, with a few tables outside, and a bar. The atmosphere is informal, and there's a decent sized play area behind the restaurant, allowing people with children to let them run around and play, rather than bother other diners. This is important in Cooperstown: the Baseball Hall of Fame tends to attract somewhat, er, boisterous, families.
We ordered Haddock and Chips, acutely aware of the distance between Cooperstown and the sea. To our delight, it was really good - the fish tasted fresh, the fries were cooked from fresh potatoes rather than frozen (as far as I could tell), and the batter had a rather nice tang to it, not overpowering, but just a subtle complement to the flavor.
We talked to the owner. Apparently he takes the four-hour trek to New York City twice a week, to buy his fish at the Fish Market. Frozen? Of course, but frozen on board the fishing boat: fish is one of the few foods that isn't adversely affected by freezing, provided it's frozen immediately.
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