We always grow peas in our garden, so I cook them often during the peak season.
Cover peas with fresh water. Add chopped onion and bring to boil on medium-heat. Cook for 30 minutes until water begins to turn brown in color. Watch and stir often because water will evaporate and you will burn your peas! When peas begin to soften, turn down to low and add salt. When you feel peas are done, taste for salt and black pepper. Turn off heat and cover. Reheat right before serving. Taste again and add desired amount of pepper sauce if more spice is desired.