While many fried foods can be purchased in the freezer section of your grocery store and heat up nicely, don't attempt this at home. Typically, freezing fried foods will leave them soggy, even if you refry them. The oil also tends to seep throughout the item, changing the flavor of the food.
So many sites promote making freezer dinners you can just reheat after a busy day. This is all well and good, but don't put pasta into your dinners. Freezing has a bad effect on pasta and turns it into a mealy, soggy lump.
Herbs turn into brown, gooey sludge when frozen. If you want to preserve your herbs, tie them together and hang them upside down or throw them on a cookie sheet and put them in the oven on 200 for an hour or so to dry.
If you find a great deal on milk, it may seem like a great idea to pop a few jugs in the freezer for later. This is only a good idea if you plan on using the milk for cooking. Trust me, you don't want to drink defrosted milk. It's clumpy and tastes funny.
Freezing cheese changes its texture. Some cheeses become mealy while others turn heavy and dense. For the most part, cheeses last for months when properly stored, so you needn't worry about freezing them.
While some vegetables taste great after being frozen, cucumbers just aren't one of them. The rule of thumb with vegetables is if you're OK with them being on the softer side, it's all right to freeze them. Cucumbers are adored for their crunchiness. That crunchiness just doesn't hold up after freezing.