Over the years I have realised that Big-eyed brown beans require lesser heat to be cooked compared to small-eyed brown beans? Could anybody explains this occurence?
Actually in cooking beans, it really isn't the heat per say, but the time in which you cook them. Certain beans require up to 6 hours, while others only require 5 minutes.
The harder the and thicker the shells, the longer the ime required.
I generally use the same temp. @ around 350*F for electric, and a medium flame on gas, once they are brought to a boil. Boiling point is at ~212*F, onc ethe boiling point is active, just turn down the heat to low boil and give a minimum time of 3 to 4 hours. Do not add salt untl the last ten minutes of your cooking time. I usually use a couple ham hocks and add an asortment of spices during the cook.