...Really like the hand sanitizer, doesn't last as long as Esbit but its easy to refill the burner tray. The modded burner tray allows me to put extra in.
Have been using hand sanitizer here for this purpose for about a decade now, since i couldn´t find any gel-fuel up here, back when that stuff suddenly stirred a major interest on the Mamod board.
I find that as long as one goes for the high alcoholvolume products, they´ll all work well for heating, but some of them does have a less intriguing smell.
My current batch is 85% (155 proof), which puts it very close to the concentration recommended by several toy manufacturer recommendations back in the day, when it comes to watering down alcohol for liquid fuel burners.
Particularly find it useful with Wilesco´s, with their relatively large and deep burners. There´s quite a bit of room in those "buckets", once they´ve been sealed with a couple of layers of aluminum fuel.