the non-stick coating on my basket is chipping off into my food, is this safe?

Diagnosis

The chipping you are seeing is the degradation of the polytetrafluoroethylene (PTFE) or ceramic-based non-stick coating applied to the carbon steel basket of the Cosori Pro II 5.8QT. When this layer peels, you are ingesting small flakes of synthetic polymer and potentially exposing the underlying metal. While the flakes themselves often pass through the digestive system, the presence of peeling indicates that the structural integrity of the coating has failed, which can lead to food sticking, uneven heating, and the release of chemical particulates into your meals. This failure typically occurs due to "thermal shock" or mechanical abrasion. If you place a cold basket into a preheated unit or scrub the basket with a steel wool pad or a green abrasive scouring sponge, you create microscopic fissures in the coating. Furthermore, the high alkalinity of automatic dishwasher detergents chemically strips the bonding agents that hold the non-stick layer to the metal, causing it to bubble and flake off in sheets. You can confirm the severity by rubbing a damp white paper towel across the surface; if black or grey residue transfers to the towel, the coating is actively shedding.

How to Fix It

Because the non-stick coating cannot be "repaired" or patched safely at home, the only solution is a full component replacement. Follow these steps to restore your unit:

1. Immediately cease using the compromised basket. Do not attempt to sand down the remaining coating, as this will expose the raw steel and cause permanent rusting.
2. Purchase a genuine Cosori replacement basket specifically for the 5.8QT Pro II model. Ensure the part number matches your specific generation, as the Pro II has slightly different dimensions and handle locking mechanisms than the original Pro model.
3. Before using the new basket, wash it by hand using a soft microfiber cloth or a soft-bristle nylon brush and a pH-neutral dish soap.
4. To prevent future chipping, switch all cooking utensils to food-grade silicone or heat-resistant nylon. Never use stainless steel tongs or metal forks to scrape food from the basket.
5. Implement a "soak method" for cleaning: fill the basket with warm, soapy water and let it sit for 15 minutes to loosen grease, rather than scrubbing the surface with force.

If That Didn't Work

• Use Perforated Parchment Liners: If you are hesitant to buy a new basket or want to extend the life of a new one, use 7-inch precut perforated parchment paper liners. These create a physical barrier between the food and the coating, preventing direct abrasion from hard ingredients like frozen breaded chicken or bone-in wings.
• Switch to Silicone Inserts: Purchase a third-party food-grade silicone air fryer liner. These are reusable, dishwasher-safe, and fit snugly inside the 5.8QT basket, ensuring that your food never actually touches the non-stick surface.
• Adjust Temperature Settings: Avoid using the "Max" temperature setting for extended periods if you are cooking dry foods. Overheating the basket beyond the rated temperature of the coating can cause the polymer to become brittle and crack.
• Verify Dishwasher Compatibility: Even if the unit is marketed as dishwasher safe, stop using the dishwasher entirely for the basket. The high-heat drying cycle and harsh detergents are the primary culprits for coating failure in the Pro II series.

Heads Up

• Avoid Aerosol Sprays: Never use commercial non-stick cooking sprays (like Pam). These contain lecithin and other propellants that create a gummy residue which "bakes" onto the coating and causes it to peel when you try to scrub it off. Use a brush to apply a small amount of avocado or grapeseed oil instead.
• Temperature Thresholds: Do not allow the basket to exceed 450°F for prolonged periods, as this is the threshold where many non-stick coatings begin to chemically break down.
• Cooling Protocol: Always let the basket cool to room temperature before immersing it in cold water to avoid thermal shock cracking.
• Inspection Cycle: Once a month, inspect the bottom corners of the basket for "pinholing"—tiny dots where the coating has worn through—so you can replace the part before it begins flaking into your food.