does the freeze & bake mini poddies lid create an air-tight seal?

No. Every Freeze & Bake Mini Poddie comes with a clear silicone lid so you can store your frozen or baked treats in the freezer, but they’re not designed to be water or air-tight. We recommend consuming your delights within a few days (if they even last that long), or alternatively pop them into an air tight container to prevent freezer burn.