Bring water and sugar to a boil over medium to medium-high heat.
Meanwhile cut clean nopalitos into 1 x 3-inch pieces or into small shapes with
a cookie cuter. Rinse the nopalitos under cold water until the mucous-like substance
that can be seen along cut portions disappears. Add the nopalitos to the boiling
syrup, turn the heat down until it is just a bare simmer, and cook for 15 minutes.
With tongs, remove the nopalitos to a plate and spoon some syrup over them.