Method for preparing bread Kbac

The invention relates to a method for preparing light or dark-coloured bread Kbac. The method comprises the following steps of (1) preparing a fungus strain; (2) baking a bread; (3) saccharifying the bread; (4) fermenting a liquid material; (5) after the whole fermentation is finished, filtering, regulating, sterilizing and filling the product into a container to obtain the bread Kbac. The step (1) of preparing the fungus strain comprises the steps of preparing a yeast fungus strain and a lactobacillus fungus strain, wherein the lactobacillus fungus strain is lactobacillus bulgaricus or streptococcus thermophilus.