Cooking vessel support system having a gas burner and gas delivery system

A removable cooking vessel support system for a cooktop floor of a cooking appliance, the cooking vessel support system comprising:

• a gas burner;
• and
• a support frame including a base having a lower surface for supporting the cooking vessel support system on the cooktop floor and a plurality of upper support surfaces configured to support a cooking vessel above the gas burner,
• wherein the support frame includes at least a first arm supporting the gas burner at a level between the lower surface of the base and the plurality of upper support surfaces such that the gas burner is configured to be supported by the support frame above and spaced apart from the cooktop floor, and
• wherein the support frame includes an internal passageway in fluid communication with the gas burner and configured to draw primary air into the support frame at a location above the lower surface of the base and to mix the primary air with an injected gas to provide an air-gas mixture, at least a portion of the internal passageway being formed in the first arm of the support frame such that the air-gas mixture is guided by the internal passageway through the first arm to the gas burner.