Pick only red-ripe raspberries that easily slip off the plant into your fingers without pinching them, which can crush and damage this delicate berry.
Store raspberries you have just harvested in a shallow baking dish in the shade while you complete your harvesting. Put them in the refrigerator as soon as possible, but either eat them fresh or freeze them within two or three days for the best flavor.
Place your raspberries into a shallow baking dish before you wash them and gently sort through them with your fingers to cull those that are crushed or beginning to rot or form mold.
Transfer 1 to 2 cups of raspberries into a colander. Fill the sink with cool water and then dunk the colander into it twice, gently shaking off excess water after each immersion to remove all dirt or dust from the berries.
Spread the washed raspberries in a single layer on paper towels to dry. Do not press the berries; allow them to air dry for up to one hour. Eat them immediately.