Using punk wood as a tinder is a great way to go about fire lighting. Punk wood is what’s left of wood after a dry rot has been through it. It’s one of those that you tend to find as you’re wandering around, often without deliberately trying to find it. It will ignite with a fire steel, traditional flint & steel, parabolic mirrors and lenses.
You can also char punk wood, which in my experience makes it easire to ignite.
We teach using punk wood as a tinder on our 2 Day & 5 Day Bushcraft Courses as well as the IOL Bushcraft Competency Course.
You can see plenty of photos from all of these courses on our Facebook page.