In a bowl or measuring cup add ⅓ cup simple syrup* and the pistachios. Toss well to coat and pour out onto a lined baking sheet. Spread evenly.
Sprinkle the salt and cayenne evenly over the pistachio sugar- course is best because it will cause a little texture on the brittle.
Bake for about 15 minutes. Stir and ensure it’s cooking evenly. Continue to cook until it’s just beginning to take on some color.
Remove from the oven and let cool. Roll up the edges of the silpat or parchment paper and squish the brittle until it cracks into small pieces. Store in an airtight jar until you’re ready to use.
Using a small serrated knife, remove all the skin from the citrus fruits. Then slice into ¼ inch thick rounds.
Spread over a bowl or plate. Drizzle with remaining simple syrup. Scatter a couple of tablespoons of the brittle over the rounds. Serve.
Notes
*I used geranium. If you don’t feel like dealing with this, maple syrup would work just fine. Lots of flavors would be awesome here. I also tried cardamom, which was awesome too.