^ this is my preferred method of lighting as well, doesn't take much either
if you don't carry hand sanitizer, take a knife and scrape some shavings off a corner and then light w/ a match or lighter- much easier than putting a light to a fully intact cube
my experience (w/ the 4dog LT1 stove) is that a cube will boil 16oz (In a SP 600) w/ enough left over to easily do my morning coffee the next day
I tend to use wood more these days, but the Esbit is a nice backup

