How can I use a pressure cooker to quickly and easily caramelize onions?

To quickly caramelize onions using a pressure cooker, first saut the onions in oil until they are soft. Then, add a pinch of baking soda to help speed up the caramelization process. Close the pressure cooker lid and cook on high pressure for about 10-15 minutes. Release the pressure, open the lid, and continue cooking the onions uncovered until they reach your desired level of caramelization.