Store in an Airtight Container – Place the cut grapefruit in an airtight container to prevent exposure to air, which can dry it out and cause spoilage.
Cover with Plastic Wrap – If you don't have a container, cover the cut side of the grapefruit tightly with plastic wrap to seal in moisture and freshness.
Keep It in the Refrigerator – Store the wrapped or container-sealed grapefruit in the refrigerator at a temperature of 35–40°F (2–4°C) to slow spoilage.
Add a Layer of Citrus Juice – Drizzle a little fresh grapefruit or lemon juice over the exposed flesh to preserve color and prevent drying.
Store in a Single Layer – Avoid stacking pieces to prevent squishing and promote even cooling.
Consume Within 2–3 Days – Cut grapefruit is best enjoyed within 2–3 days for maximum freshness, as it may lose flavor or texture over time.
Freeze for Long-Term Storage – If you can’t finish it quickly, freeze the grapefruit. Segment the fruit, remove the membrane, and store it in a freezer-safe bag or container with a bit of syrup or juice to prevent freezer burn.