Strawberries that keep in the refrigerator for more than two days
Your berries may already have mold spores on their outsides. If you kill the spores before refrigerating the berries, they should last longer.
This source recommends submerging your berries in a bath of 1 cup vinegar + 3 cups water, then draining and thoroughly drying them in a salad spinner lined with paper towels. Then they recommend storing them in a wide, flat container so they can be laid in a single layer rather than crowded together and on top of each other. Line the bottom of the container with paper towels and leave the lid ajar.
If you are out out vinegar, the same source recommends a quick (30 second) dunk in a hot water bath (120°F - 140°F). Then dry and store the berries the same way.
Other sources recommend rinsing the berries with plain water after the vinegar bath to remove the vinegar smell and taste.
If you don't have a salad spinner, dry them by spreading them out in a single layer on paper towels. I use a wide pan with edges at least 2&quot; high (a sheet cake pan works well). That way you can gently shake it, so the berries roll around on the paper towels and get dried off on all sides.