How to Make It
In a large bowl, toss the cactus paddles and jalapeños with the salt and let stand for 45 minutes. Drain well. Transfer the cactus and jalapeños to a heatproof bowl.
In a medium saucepan, combine the water with the vinegar, sugar and paprika and bring to a boil. Pour the brine over the cactus and jalapeños and stir well. Let cool to room temperature, then cover and refrigerate for 2 days before serving.
Most nopales are sold with the spikes removed; any stray spikes can be removed with a sharp paring knife.