Registered dietitian Liz Cook, MS, RD, shares tips on how to waste less and save money on food purchases.
She recommends setting the refrigerator between 38 and 40 degrees Fahrenheit for optimal freshness and storing more perishable items on the shelves and less-perishable items in the doors. Take inventory of what you already have on hand and dispose of expired items before purchasing more. Purchase food likely to be consumed soon and use a paper towel or small reusable towel directly in containers of greens to prevent them from turning slimy. Store fresh herbs in a small glass or jar filled with water and wash berries in a mixture of white vinegar and water, then store with a dry towel or paper towel. Finally, store avocados on the counter until ripe and then transfer to the fridge to prevent them from getting overripe.
Source:https://www.onpoint-nutrition.com/blog/make-food-last-longer