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This article:

http://www.lipower.org/stormcenter/food.html

tells you what you need to know.

Our last cyclone we had no power for 9 days.

After 3 days for milk cheese etc I threw out.

We bought heaps of ice to put in the chest freezer for our meats etc...

Basically we lived on BBQ's for a week.

Fish would be the first to throw out though, it'll stink