If you've accidentally burned your stainless steel pressure cooker, you can easily clean it at home. Follow the instructions below: 1. Fill the pressure cooker with water and add a squirt of dish soap. Bring the water to a boil and let the pressure cooker simmer for 15 minutes. 2. Carefully pour the soapy water and rinse the pressure cooker well. 3. Fill the pressure cooker with vinegar and water (equal parts) and bring it to a boil. Let it simmer for 15 minutes, then pour out the vinegar solution and rinse well. 4. If there are still burnt-on food residues, scrub them gently with a nylon scrubber or abrasive pad.