Can I freeze cooked Dauphinoise Potato and what foods are absolute no no's for the freezer.

--Lisa

Raw potatoes cannot be frozen, as freezing converts the starch in them to sugar, resulting in an unpleasantly sweet product.  Once they are cooked, however, this problem is lessened.

To freeze Dauphinoise Potatoes, prepare them as usual, omitting the cheese topping, and cook until almost done.  Cool quickly and then freeze in the baking dish, wrapped in plastic or foil.  To reheat, bake at 400°F (205°C) until warmed thoroughly.  Top with cheese for the last 15 minutes of cooking.

You can partially thaw them in the refrigerator before reheating. 

Frozen Dauphinoise Potatoes should keep for about two months.

It is hard to give a comprehensive list of foods not to freeze, but a few notables would be:
- salad greens;
- most fruits and vegatables with a high water content;
- most fried foods (unless you have access to a flash freezer);
- mayonnaise and other sauces which may separate;
- many cheeses;
- custards or puddings; and
- cooked egg whites.

Tomatoes can be prepared by washing and removing the hard part at the stem end, and then open freezing for later use in soups and sauces.

Cheese will become grainy and unpleasant to eat but can still be used in cooking, and cooked egg whites become rubbery.

A note on this posting - while it is okay to freeze Dauphinoise Potatoes which is basically Scalloped Potatoes made with, or sometimes without, cheese on top, it does not work to freeze Potatoes Dauphine.  Potatoes Dauphine are croquettes made by mixing a choux pastry dough with mashed potatoes.  The batter is then formed into balls and deep fried.  Some recipes for Potatoes Dauphine roll the balls in bread crumbs before deep frying.