Fruit and Vegetables Upside Down.
I grocery shop once a week for unprocessed fruit and vegetables. But keeping packaged food crisp and firm can be difficult. Without proper airflow, condensation can collect and cause a much faster spoilage rate.
In grocery stores, the containers always sit upright to show the label. The top covers may have narrow gaps and or tiny openings at the bottom for some circulation. Other packages have no openings at all.
Once the food is in my fridge, I flip the cartons upside down to allow a new flow of air to reach the bottom part. This technique allows even more moisture to escape slowing down the damage.
I use this technique for blueberries, blackberries, and strawberries. Also, works well for tomatoes, arugula, mixed baby greens, and spinach.