When evaluating portable gas stoves, prioritize Heat Output (measured in BTU or kW); for outdoor cooking, a minimum of 2.0kW (approx. 7,000 BTU) is recommended. Ensure the stove features a high-quality brass or aluminum burner for better heat distribution and corrosion resistance. Additionally, check for Piezoelectric Ignition systems which eliminate the need for matches, and verify that the pot support is made of stainless steel or enamel-coated iron to handle weights of at least 5-10kg without deforming.