First of all, coffee beans or ground coffee should be stored in an airtight container. Since air, light, and moisture ruin coffee, the container should be dark or at least impervious to light. Also, coffee beans and grounds become dry and flavorless when chilled.
An airtight container will also protect the coffee from absorbing other flavors. Those precious beans should live as far away from the fridge as possible. It’s ideal to use it up in about two weeks. If you have to, then you can freeze whole beans to preserve your coffee if you have huge amounts.
Don’t Store Flour In the Fridge
Flour should be stored in an airtight container or in a plastic bag. Keeping it in a plastic snap-top container makes it convenient to scoop into your recipes. Regular bleached or unbleached white flour will stay for up to two years, so it shouldn't be necessary to store it in the fridge.
However, when you’re dealing with whole grain flours, their shelf life shrinks to just a few months, so if you need to, then you can be stored the same way. But if you know you won't use it in that short span of time, then freezing it will keep it fresh much longer.
Do Not Put Honey In the Refrigerator You Will Regret It
Once a jar of honey has been refrigerated, it will harden up and will not pour until it is heated. You can wait until it comes to room temp, but why not just leave it out? Honey is one of the most stable foods in nature and can last a very long time.
Honey has natural preservation properties. The high sugar levels and zero water content make honey a hypertonic substance, and in this environment, any bacteria will basically suffocate and die of dehydration. The good news is honey lasts forever. The honey in hives has the potential to last hundreds of years.
Spare the Peanut Butter
Any brand of processed peanut butter can stay in the pantry. Keeping it on the shelf makes it convenient to use and easy to spread. Putting it in the fridge will harden the nutty spread and make it prone to drying out. Natural peanut butter lacks hydrogenated oils and preservatives that allow pantry storage.
So if you like to buy that type of peanut butter, you might need to keep the jar in the refrigerator. If you know it’s going to be months before you finish off a jar of processed peanut butter; you can stick it in the fridge to make it last longer.
It’s Not a Good Idea to Keep Onions In the Fridge
Some foods go bad when exposed to air, but other foods, like onions, depend on a well-ventilated environment. Keeping whole onions in the refrigerator introduces moisture, and, as an absorptive vegetable, the added moisture somehow gets trapped inside and causes the onion to get mushy inside, making it more susceptible to spoiling.
To get the longest shelf life out of onions, store them in a cool, dark place like the pantry. After onions have been chopped or peeled then it's advisable that you store it in an airtight container, on the other hand, they last at least two weeks in the fridge.