Preparation In large pot boiling salted water , cook beans until crisp-tender, about 4 minutes. Drain in colander and rinse well under cold running water. Drain well and pat dry with paper towels. (Green beans can be prepared up to 1 day ahead and refrigerated, wrapped in paper towels, in zippered plastic bags.) In 12-inch heavy skillet over moderate heat, heat butter until hot but not smoking. Add ginger and sauté until softened and fragrant, about 30 seconds. Stir in green beans and stock and cook, stirring often, until liquid is almost completely evaporated, about 3 to 6 minutes. Add cashews and sauté 1 minute. Stir in salt and pepper. (Green beans can be made up to 30 minutes before serving. Let stand in skillet, uncovered. Reheat over high heat, stirring often, about 2 minutes.) Transfer to serving dish and serve immediately. Test-Kitchen Tips:The green beans can be blanched up to 1 day ahead, but be sure to wrap them in paper towels before refrigerating to soak up excess moisture. Even stored like this, they'll last only 1 day before sogginess sets in.