Here's a comparison project by Cooling Effect, which was recommended to me by reasonable skeptical, saavy people at my work: https://www.cooleffect.org/content/

Here's a comparison project by Cooling Effect, which was recommended to me by reasonable skeptical, saavy people at my work: https://www.cooleffect.org/content/project/affordable-cookstoves https://www.cooleffect.org/content/project/affordable-cookst... My guess is this is still highly optimistic, but the project claims are 50% emissions reduction from cooking, which is at least possible.