3 tablespoons white vinegar
1 envelope unflavoured gelatin
1 teaspoon vanilla extract (or flavouring of your choice)
1 teaspoon sugar
Microwave vinegar in a baby food jar for about 35-45 seconds
(depends on the strength of your microwave). Add gelatin.
flavouring and and sugar. Stir to dissolve gelatin. If the
gelatin doesn't dissolve, put into microwave again for 10 second
intervals until gelatin is dissolved and liquid.
Using a stiff bristle paint brush about 1/2" wide, "paint" the
glue in a very thin layer on the flap of your envelope. When
completely dry, moisten as usual and press flap closed to seal
Makes enough for about 25 quarter-fold envelopes.
**note: as this glue is a food product, keep unused glue in the
refrigerator for up to 2 weeks. To re-use the glue, heat in the
microwave on low in 15 second intervals until liquid again.