The outside of it will frost up, it'll just feel chilled.

它的外面会结霜，它只会感到寒冷。

You can make small ones like this here, and then with these moulds all you need to do is seal the edges with butter to make sure it doesn't freeze or frost up.

你可以在这里制作像这样的小模具，然后用这些模具，你所需要做的就是用黄油封住边缘，以确保它不会结冰或结霜。