How do you do this? Here are some few tips:
Tip no. 1
Temperature: Keep your peanut butter stored in a cool, dry place with limited light and heat. Some appliances can produce heat.
Tip no. 2
Store your peanut butter in airtight containers. An open jar of peanut butter stays fresh up to three months in the pantry. After that, it’s recommended to store the peanut butter in the fridge, where it can maintain its quality for another 3-4 months. If you don’t refrigerate, oil separation can occur.
Tip no. 3
Only buy what you expect to use within the time recommended on the peanut butter label. At home, be sure to use the oldest first. Your geographic area will affect recommended storage time. Warm and humid climates can shorten shelf life.
Tip no. 4
Always purchase fresh-looking cans. Do not buy old stock. Carefully check for dents in cans before buying. Be wary of purchasing bulging cans
Here is a low-down of peanut butter Shelf Life in your Pantry
Peanut Butter, unopened 12 months Refrigeration not needed
Peanut Butter, opened 2-3 months Lasts 6 -9 months in refrigerator