Here is a general list of things that do not freeze well.

Cooked egg whites and soft meringues

Jell-O or gelatin( it weeps) except in soufflés that will be eaten frozen

Cake or pie with custard filling

Cake icing that contains egg white

Mayonnaise ( separates and gets runny)

Cloves and imitation vanilla

Sauces thickened with flour or cornstarch, except when used as a binder for other ingredients.

Milk, light cream or sour cream .( We do freeze milk sometimes but it tends to separate)

Heavy cream, except when whipped

Vegetables high in water content, such as celery, fennel, tomatoes, leafy salad greens, cucumbers, radishes, potatoes, zucchini and eggplant, UNLESS they have been cooked and finely chopped or pureed

Raw vegetables unless they have been blanched first