A pressure cooker is a must have for anyone that loves to cook.  I eat a lot of dry beans, because I don't have much money to spend on groceries.  Dry beans without a pressure cooker, an all night soak or a one hour boil followed by a one to two hour cook.  Dry beans with a pressure cooker, put the beans in the cooker dry and their done in fifteen to forty minutes.  This pressure cooker tells you when it's not safe to open.  The lid is difficult to turn.  When it's safe the lid turns easily.  I have had some difficulty in clearing the center hole on the lid, however it is possible that not all toothpicks are the same diameter.