Blue Raspberry Lemonade Slush

Blue raspberry isn't a real fruit and I don't care, it tastes like every good summer of my childhood. Mixed cold lemonade with blue raspberry syrup in the Ninja Slushi and the Blue Raspberry Lemonade Slush came out electric blue and tart, like the bottom of a snow cone you'd fight your sibling over. My nephew took one look and asked if his tongue would turn blue. It did. Worth it. Start with less syrup than you think, then taste. That stuff is sweet, and the lemonade needs room to do its tart thing.