Pick over the chickpeas, rinse and soak in 3/4 cup of water, in the refrigerator over night, or at least 8 hours. The more the better.
In the morning, add the chickpeas and their soaking water and maybe another 1/2 cup of water, to a pressure cooker. Cook on medium for 12- 16 whistles. Remove from the heat and allow too cool until ready for use. When ready to use, drain the chickpeas of any excess cooking water.