Mod Podge is the brand name of a glue that is widely used in decoupage and that works at the same time as a kind of varnish.
Because it’s not cheap I’ve been of course interested in the self-made Mod Podge ;-)
Note: In the tutorial she says the following: “I’ve read that the homemade version can give a yellow glow after a couple of years and doesn’t hold as long as the real podge.”
Links:
Self-made Mod Podge (Lana’s Podge DIY)
via: home-made podge