Cold Sesame Noodles with Broccoli and Kale

Name: Cold Sesame Noodles with Broccoli and Kale
Ingredients: 1 large head of broccoli, cut into large florets with some stalk attached; 2 garlic cloves, 1 finely grated, 1 thinly sliced, divided; 1½ teaspoons sambal oelek; 1 tablespoon plus ½ cup sherry vinegar or red wine vinegar, divided; ¾ cup vegetable oil, divided; 1 teaspoon kosher salt, plus more; ¼ teaspoon freshly ground black pepper, plus more; 3 scallions, green parts only, thinly sliced, plus more for serving; 1 3-inch piece ginger, peeled, cut into 1-inch matchsticks; 4 cups chopped Tuscan kale leaves; 2 10-ounce packages fresh ramen noodles or two 3-ounce packages dried; Torn mint leaves and toasted sesame seeds (for serving)