When something is meant to be, it's meant to be. After hearing about the Montague Book Mill, a used-book haven for readers in a converted 19th century mill in the beautiful central Massachusetts hills, my husband Ted and I immediately planned a road trip. The book store was all we hoped it would be: well-stocked with books both esoteric and practical, formerly-stuffed chairs for leisurely perusing placed in every corner, and an adjacent café with coffee and sandwiches for sustenance. We each snagged a few treasures. One of mine, Slow Cooker Comfort Food, offered this recipe for Basque tuna with potatoes and peppers, which I adapted somewhat from the original. I had everything on hand, including chunks of tuna in the freezer, some teeny potatoes from Trader Joe's, and bits of garden tomatoes that needed to be used right away. The garlicky aroma of the tomato sauce in the slow cooker teased us all afternoon, and the fish, marinated in the famous smoky-hot Espelette pepper, tasted like a warm summer day in France.