That makes more sense. Around texas, prickley pear would be the green pads. People eat them, most often stewed with onion and tomato. The tunas, are the purple fruit. They are awesome. I've used them to color and flavor shines. People make a lot of jelly and I've had some wine from them. They are good for sweet likkers... The color is amazing.
Since they don't have much sugar, I've only used them on the back-end of the distilling process. I chopped them and boiled with sugar to make an electric purple syrup. I added that to some rums and sugarhead... It wasn't spectacular, but not a fail either. More research is needed
Good luck to ya!