Diagnosis
You're asking about the maximum fill line because overfilling a pressure cooker is a primary cause of safety issues. It can force food particles into the vent pipe (pressure release valve), clogging it and preventing the cooker from depressurizing safely. This is especially critical for foamy foods like soups, stews, or legumes.
How to Fix It
For your 5L Prestige Popular aluminum cooker, follow these volume guidelines:
- For Liquids (soup, stew, broth): Never fill the inner pot past the two-thirds (2/3) line. This is your effective "max fill" for soups.
- For Foods That Expand (rice, beans, lentils): Fill only to the halfway (1/2) mark to prevent expansion from blocking the vent.
- General Rule: Always ensure the total contents—liquid and solid combined—stay at or below these limits. The cooker needs adequate air space above the food to build pressure safely.
If That Didn't Work
If you're still experiencing issues like steam or liquid spurting from the vent during cooking, you may be exceeding these limits with a foamy recipe. For thick soups or stews with beans, use the more conservative "halfway" rule. Also, ensure you are using the correct amount of minimum liquid (typically at least 1-2 cups) to generate sufficient steam.
Heads Up
Never attempt to force the lid open if pressure hasn't released. Always clean the vent pipe and safety valve after each use to prevent old food residue from causing a clog. Do not immerse the main lid body in water; wipe it clean.