Soak the washed beans in enough cold water to cover overnight

In the morning add water to cover the beans if needed and simmer till beans are tender 1 hour maybe more.

Meanwhile put molasses ketchup, vinegar, mustard in a bowl and mix. Add spices and brown sugar and 1 cup of boiling water and mix well until smooth

Place onion in deep casserole dish or bean crock, (I use a 3 liter cast iron pot). Add the bacon or salt pork and spoon the beans and the liquid they boiled in over the onion and pork. Add the molasses mixture gently to the beans

Place in a 300 ° oven for 5 1/2 hours. Check once in a while to make sure they are still covered in a bit of liquid.