Roast the broccoli: Preheat the oven to 400 degrees F. Add the broccoli florets, oil and a large pinch of salt to a rimmed baking sheet lined with parchment paper. Toss to combine, and spread out in a single layer. Roast for 20 minutes, stir and continue roasting until broccoli is browning, 10 minutes more. Remove from the oven, and set aside to cool.
Make the dressing: Warm the unrefined sesame oil in a small skillet over medium heat. Add the garlic and jalapeno, and cook until garlic is golden, 1 to 2 minutes. Transfer the mixture to a small bowl, and add the vinegar, tamari, toasted sesame oil and sesame seeds. Stir well to combine.
Assemble the salad: Add the roasted broccoli, carrots, daikon and scallions to a large bowl, and toss to combine. Divide between 2 bowls, and drizzle with dressing. Sprinkle with toasted sesame seeds, and serve immediately.
The broccoli stems can be peeled and steamed as a side dish or used in soups or stir-fries. Or add them to green juice for a spicy, nutritional boost.