This is a perfect time to eat raw! But also I have a butane/propane personal burner in my van, as well as an Esbit cooking cup that uses fuel tablets - or liquid fuel if you'd like. The burner stove for 'bigger' things, and the Esbit for things like heating water or canned items

Gas one stove - https://www.amazon.com/dp/B07FJQ3KNK/

Esbit stove - https://www.amazon.com/dp/B001UERXOQ/