Preheat oven to 325 degrees
Brown Bread is traditionally made in an aluminum can (yes, I'm sure) you can use one, or a cylindrical mold. Brown Bread is cut into rounds, hence the need for a cylinder.
Use the butter to grease the can or mold.
Combine all the flours then add the baking soda and salt
In a 2 qt mixing bowl add the combined flour mixture with the molasses and milk adding wet to dry, stir until incorporated. Fold in currants or raisins if using.
Fill the mold or can with batter about 2/3 of the way. Cover the top with foil to make an airtight seal.
Place in a 3-4 cup dutch oven - foil side up - and fill with boiling water that comes only halfway up the side of the can/mold.
Place in a pre-heated oven for 2 hours
After cooking, take out of the water, remove the oil and allow to cool for 1 hour before taking out of can/mold.
Slice in rounds and enjoy with butter and your favorite baked beans.