How to Make It
Light a grill. In a shallow bowl, combine the lime, orange and pineapple juices, the sugar, star anise, rosemary and cinnamon. Add the shrimp and toss to coat; cover and refrigerate for 10 minutes.
Remove the shrimp from the marinade. Put the marinade in a small saucepan, add the crushed red pepper and boil over high heat until reduced to 1/3 cup, about 8 minutes. Strain into a bowl.
Brush the shrimp with olive oil and season with salt and pepper. Grill over a hot fire until nicely charred, 1 minute per side. Add the shrimp to the sauce, toss and serve at once.