I believe all that blue dye you're washing away, holds antioxidant properties. I for one would prefer to include those healthy properties in my muffins, regardless of the problem described in this post. As noted by PJ in her blog: To those of you below wondering about losing flavor and nutrients when you rinse the berries, it’s true, you probably lose a little bit of the berries’ nutrition. But most of the juice (and vitamins) remain inside the berries; and I doubt you could notice a difference in flavor. By all means, use berries without rinsing, if that’s your preference. As usual – no baking police here! JoAnn@KAF

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