Recommend a 50:50 mix of molasses and cane sugar by weight added to boiling water to 20 - 25 brix (1.083- 1.105 gravity) Once cooled to under 100 degrees F, pitch yeast and add a yeast nutrient. Buffering the molasses wash pH with calcium is recommended to maintain a robust fermentation as pH will drop dramatically during fermentation sometimes bringing everything to a halt. Calcium hydroxide is very reactive, calcium carbonate will work also. Molasses is deficient in a number of things, so adding a yeast nutrient supplement and DAP will make for a much more robust fermentation. Bread yeast is great for making bread, but I would suggest a distillers yeast or champagne yeast for rum.