Another portable stove that I really like watching videos of, is the Biolite Campstove 2+.
You can check it out here:
Save $40 with this fully integrated cooking system - includes the BioLite CampStove 2+, KettlePot & Portable Grill. Wood-fired flavor with USB charging.
ca.bioliteenergy.com
It’s a small fire pot, that has a yellow battery pack attached to it. The fire recharges the battery pack using a mini-thermoelectric generator. Then the battery pack powers a fan that boosts the fire, making it mostly smokeless and more efficient. It’s a pretty neat power loop. Take note that you gotta charge your pack first, as it won’t charge from zero using fire.
The battery pack also has a USB port you can use to charge your phone. You can also plug in a LED light. One is included with the kit.
You can fuel it with twigs and scraps of wood. Hard wood is best, obviously. You can also use wood pellets. If you fuel it with small bits of wood and small branches, you’ll probably have to add more every few minutes, as it can burn through it pretty fast, due to the fan boosting the fire.
Here’s a diagram that summarizes the energy loop:
As shown in the first image, Biolite offers a “complete cook kit” that includes a kettle, coffee piston and a cook grill that goes on top of the unit.
From what I could see online, the grill works pretty well and seems to get very hot, pretty fast. As for the WoodFlame, it has hot and cold spots, so you gotta rotate your food now and then to ensure nothing gets burned or undercooked.
When carrying it, the battery pack fits inside the fire pot, which then fits in the kettle. It’s pretty cool. The grill takes more room, though, but it’s pretty light.
All in all, it’s a pretty rad device that I’d love to own. I’m watching it closely, as I believe they might update it sometime in the coming year. That model has been around for about 5 years, as far as I know.