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There's an old traditional dish Spanish shepherds eat called migas. While out to pasture with their herd, shepherd's need to be resourceful and use what is availiable at hand. Migas is usually made with day-old stale bread with a mixture olive oil, garlic, chorizo or bacon. It's very simple to make, and tastes quite good.
There are many variations of the recipe available online. If you want to try something new and have day-old stale bread, it might be worth giving it a shot.