Steam generator and heating cooker including steam generator

A steam generator comprising:

• a water storage chamber which stores water;
• at least one heating portion which heats water in the water storage chamber to generate steam;
• a water supply device which supplies water into the water storage chamber;
• and
• a plurality of fins provided in the water storage chamber, wherein
• the water storage chamber comprises an aluminum die cast body portion which has an opening, and a water storage chamber cover which is provided opposite to the opening, wherein
• the water storage chamber has a steam spout port from which the steam generated by the heating portion spouts, wherein
• the plurality of fins extend from a first surface as a part of the body portion of the water storage chamber along a steam-generating direction under the steam spout port, being separated with each other and crossing the heating portion, wherein
• distal ends of the fins are spaced from a second side surface as a part of the water storage chamber cover opposite to the first side surface of the water storage chamber, and wherein
• the heating portion is casted in the body portion of the water storage chamber.