The present invention provides a transformed microorganism capable of displaying α-galactosidase on its surface layer. Also provided is a method for producing an alcohol, which includes the step of culturing the transformed microorganism in a culture medium containing a material that contains an oligosaccharide α-1,6 linked α-galactose. Also provided is a method for producing lactic acid using such a transformed microorganism together with a material that contains an oligosaccharide α-1,6 linked α-galactose. According to the present invention, a microorganism can be provided, which can degrade an oligosaccharide containing α-1,6 linked α-galactose, which may occur in soybean molasses.