accidentally left food in my hawkins contura for hours, now the inside looks darker and stained, is it safe and how do i clean it?

Diagnosis

The darkened, stained interior of your Hawkins Contura is almost certainly caused by a prolonged chemical reaction between the hard-anodized aluminum surface and the minerals, acids, or salts in the food or liquid left inside. This creates a superficial tarnish or oxidation layer. While unsightly, this staining does not compromise the structural integrity of the cooker or make it unsafe for future use, as the hard-anodized layer is non-reactive and non-toxic.

How to Fix It

To safely clean the hard-anodized inner pot:

1. Fill the pot with hot water and a few drops of mild dish soap. Let it soak for 15-20 minutes to loosen residue.
2. Use a soft sponge, nylon scrubber, or the Hawkins-provided cleaning sponge. Gently scrub the stained areas. Avoid steel wool, abrasive scouring pads, or harsh powders, which can scratch the anodized surface.
3. For persistent stains, make a paste of baking soda and water. Apply it to the stains, let it sit for 10 minutes, then gently scrub and rinse.
4. Rinse thoroughly with clean water and dry the pot completely with a soft cloth before storing.

If That Didn't Work

If baking soda doesn't lift the stain, try a dilute solution of white vinegar and water (1 part vinegar to 3 parts water). Soak for up to an hour, then scrub gently. The mild acid can help dissolve mineral deposits. Rinse extremely well afterward. Never use bleach or oven cleaner, as these can permanently damage the anodized finish.

Heads Up

Always empty and rinse your pressure cooker immediately after use. Never store food, salted water, or acidic liquids (like tomato sauce) in it, as this is the primary cause of staining. The gasket (rubber seal) and safety valves should be cleaned separately with soapy water to maintain proper function.