In this short video I test whether a tortilla (Dorito) chip can be used to get a fire started in inclement (bad) conditions as an accelerant. I test both a stale chip, that has been out of the bag a few days, and a fresh chip...and YES, I am using a lighter for the TEST!
However, that is not the point, there are situations where you may have one match, or a lighter that is running out of fuel, and you need to get a less than perfect tinder-bundle ignited under less than perfect conditions.
In this video I did I show how a cotton ball loaded with Vaseline/petroleum jelly works very well, as a fire accelerant >> Resilient Living: How to Make Loaded Cotton-Balls
It is important to practice your skills, especially fire-starting in varying states both physical, and environmental - not just in 70-degree weather in the middle of the day, in a bone-dry environment...and being in sound physical/mental condition.