Why does Instant Pot preserve the shape of food chunk pretty well?
This is due to the way the Instant Pot pressure cooking is done. As soon as the cooking pressure is reached inside the inner pot, the intelligent cooking programs of the Instant Pot reduce the heating temperature to only maintain the pressure and temperature. Inside the inner pot, the temperature hovers around the water boiling point under the pressure of about 11 PSI, at 115°C~118°C or 239°F~244°F. Therefore, there is no violent boiling activity to the break down the food chunks, even though they are fully done. This is one of the reasons why the Instant Pot dishes keep the perfect food chunk shapes for better presentation. In some situations, the user may want to have a more mushy effect of the food articles. As the food is fully cooked, it can be easily broken down by stirring or pressing.
