My family uses a portable gas stove like this:
http://www.amazon.com/Camp-Chef-Butane-Burner-Camping/dp/B002Z7WSJM/ref=sr_1_8?ie=UTF8&qid=1418756318&sr=8-8&keywords=portable+gas+stove
The key is to get a hotpot pot with sections, for a spicy and non-spciy side :)
http://www.amazon.com/Stainless-Steel-Cookware-Induction-Compatible/dp/B0086AKTVG/ref=sr_1_2?ie=UTF8&qid=1418756374&sr=8-2&keywords=hotpot+divided