The Oregon Raspberry and Blackberry Commission provided the following tips on raspberries and blackberries:

• When buying fresh raspberries and blackberries choose unblemished berries in dry, unstained containers. The color of raspberries should be medium to bright red; blackberries should be shiny and black — avoid those that are dull or reddish. Berries should be free of surface moisture, as moisture accelerates decay.
• Store fresh raspberries and blackberries uncovered in the refrigerator as soon as possible after purchase. Fresh berries should be arranged unwashed in a shallow pan lined with paper towels, and washed just before use. The berries may be topped with a paper towel to absorb any additional moisture.
• Shelf life for raspberries and blackberries is short. They should be consumed within two or three days of purchase. Eat at room temperature for fullest flavor.
• Raspberries and blackberries are a healthy food choice. They are low in fat and cholesterol and are a good source of vitamin C.