Check the source link to download a useful table listing recommended retention for various foods. If you are anything like me you may have been keeping some foods for way too long. Several staples are listed below. The complete list is eighteen printed pages.

Item	Room Temp	Refrigerator	Freezer
Bread	Date on package	Promotes staleness	3 months
Butter		1-3 months	6-9 months
Margarine		4-5 months	12 months
Eggs		3-5 weeks
Lunch meat (opened)		3-5 days	1-2 months
Lunch meat (unopened)		2 weeks	1-2 months
Bacon		7 days	1 month
Cooked meat		3-4 days	2-3 months
Instant Coffee (opened)	2 months
Instant Coffee (unopened)	1-2 years
Mayonnaise (opened)		2-3 months
Mayonnaise (unopened)	Date on jar

 Source