Select prickly pear cactus. Remove spines and outside layer(skin) with large knife(this can be bought already spined in stores).I found this at Walmart!. Cut pulp across in slices one-inch thick.
Soak overnight in cold water. Remove from water, cut in 1" cubes and cook in boiling water til tender. Drain.
Heat the sugar and water until sugar is dissolved. Then add cactus. Cook slowly in the syrup until nearly all the syrup is absorbed. Do not scorch! Remove cactus from syrup, drain and roll in granulated or powdered sugar. For colored cactus candy, any vegetable food coloring may be added to the syrup.