Soak for two days but wash every morning for two days,scrubbing with palms,so that it will not have sour taste..after two days, strain,wash ginger and dice,add to corn, grind in a mill...

Get a cheese cloth,tie it round a big bowl,pour in mixture,swirl palm round while adding water to mixture on cheese cloth,till all is finished...allow to settle at bottom,after 5hrs,remove cheese cloth and pour out water,scoop into a clean bag that can help drain water...wow....your pap paste is ready