High efficiency high power inner flame burner

A gas burner assembly for a cooking appliance, comprising:

• a body defining:
• a plurality of outlets around a perimeter thereof;
• an air-fuel mix inlet;
• a distribution chamber in fluid communication between the air-fuel mix inlet and the plurality of outlets;
• and
• a venturi in communication with the air-fuel mix inlet at a first end thereof, the first end of the venturi having a first diameter, and the venturi extending to a second end opposite the first end and having a second diameter greater than the first diameter;
• and
• a holder unit defining an air inlet and a fuel inlet, both the air inlet and the fuel inlet being in fluid communication with the venturi at the second end thereof.