How do I stop the pressure cooker from clogging up when cooking lentils?

Question

When I cook yellow lentils at home, the valve of the pressure cooker seems to clog up. How do I prevent this? By clog up, I mean that the pressure cooker sits quietly on the burner and then all of a sudden there is a gush of steam coming from the valve. My pan is ten years old. I soak the lentils for a few hours, rinse, and add some oil and salt to the cooking water. The lentils and the water only take up the bottom quarter.

Answer

You may need to add more oil, say a generous tablespoon. Also, I don't think you should need to soak those lentils first, the pressure cooker should be more than able to take them apart without any advance soak. Also be sure to use plenty of water. At least 8 cups for 1 pound of beans.

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