Burnt Sugar in Cooking "Tocino"

I would like to impart to my readers (in case they still didn't know), what i found out in cooking "tocino"( a Filipino dish). After cooking, we can see the burnt sugar that sticks so hard in our pan, i scratched it so it can be removed since i have to use the pan for another cooking. I put water and have it boil with the hope that it will become tender, but it didn't,  until the water was all gone and to my surprise the burnt sugar just separate from the pan when all the water was gone. or just by heating the pan the burnt sugar can be easily taken without scrubbing at all.