So, what happens when ice cream melts? Basically, the emulsion breaks down, and the fats and water separate, causing the ice cream to become watery and unappetizing. Refreezing it can also lead to the growth of ice crystals, which can give your ice cream a strange, icy texture that's just not what you want in a sweet treat.
Imagine you're at a backyard BBQ, and someone pulls out a tub of melted ice cream to serve. Not exactly the most appealing dessert, right? That's because our brains (and taste buds) are wired to associate creaminess and smoothness with delicious ice cream, not watery, icy messes. So, even if you can refreeze melted ice cream, it's just not worth it.
