Spicy Purslane, Tomato, Cucumber, Mint, and Parsley Salad

Ingredients

• 2 cups cherry or grape tomatoes
• ½ english cucumber, quartered lengthwise and finely sliced crosswise
• 2 cups tightly packed purslane leaves and small branches
• 3 scallions, including most of the green, thinly sliced
• 1 cup tightly packed coarsely chopped fresh flat-leaf parsley
• 3 tablespoons chopped fresh mint leaves
• 2 tablespoons fresh thyme leaves
• 2 jalapeño chiles, seeded and finely diced
• 3 tablespoons extra-virgin olive oil
• 1 tablespoon fresh lemon juice
• 2 teaspoons lemon zest, finely grated
• salt and pepper, to taste
• pinch of sumac (optional)