14 Ways to Preserve Food. Stop throwing out your money!

Try lining your refrigerator's crisper drawer with paper towels; they'll absorb excess moisture and keep your vegetables from rotting
A bay leaf in a container of flour, pasta, or rice will repel bugs
To make cottage cheese or sour cream last longer, turn the container upside down -- this creates a vacuum that inhibits the growth of bacteria
If you're unsure of an egg's freshness, put it in a cup of water; fresh eggs sink, while bad ones float
Store fresh herbs (washed and sealed in plastic bags) in your freezer. They'll stay fresh for a month and defrost instantly when you want to use them for cooking.
Make limp celery, carrots and radishes crunchy again by placing them in a bowl of ice water with a slice of raw potato.
Spread butter on the cut side of hard cheeses to keep them from drying out in the fridge.
Put rice in your salt shaker to absorb condensation and keep salt from hardening.
Store your butter in the freezer; it will keep fresh for up to six months.
Corn should be refrigerated while still in the husk to stay fresh the longest.
Citrus fruits can last up to two weeks right on the counter.
Garlic and onions need to be stored in a dark, cool pantry, where they will stay fresh for up to four months.
Berries keep the best when refrigerated unwashed in their original container.
Asparagus should be stored upright in the refrigerator in a jar in an inch of water.