Re: safe cooking
Yes, you could "add something" but then you'd probably have questions about corrosion, clogging, "Stove fuel only!" at higher prices because it couldn't be safely used for something else. Health concerns about combustion products. What a can of sterno. Ergh, worms.
A yellow flame, as in unpressurized alky burners, is the classic sign of incomplete combustion. And a "cold" flame. Nothing to be proud of.