Cook the Sorghum: In a medium saucepan, combine the rinsed sorghum and 1 cup (240ml) of water.
Bring to a boil, then reduce the heat to a simmer, cover, and cook for about 1 hour, or until the grains are tender but still have a slight chew.
Drain any excess water and transfer the cooked sorghum to a large mixing bowl.
Mix and Cool: While the sorghum is still hot, stir in the sun-dried tomato pesto until the grains are evenly coated.
Set aside to cool to room temperature.
Combine and Season: Once the sorghum has cooled, add the diced cucumber, halved tomatoes, chopped fresh herbs, sliced green onions, and fresh lemon juice to the bowl. Gently stir everything together.
Season with salt and pepper to your liking.
Rest and Serve: For the best flavor, allow the salad to stand at room temperature for at least 1 hour, or refrigerate overnight.
Serve chilled or at room temperature.
Don't skip the resting time!
Letting the salad stand for at least an hour allows the sorghum to absorb all the delicious flavors from the pesto, lemon juice, and vegetables.