Japanese Miso Roasted Vegetables

Name: Japanese Miso Roasted Vegetables
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: Japanese
Ingredients: 2 medium potatoes; 2 medium carrots; 3 small sweet potatoes; 3 red onions; Olive oil, salt and pepper; 4 garlic cloves (minced); 1 tablespoon grated ginger; 1 tablespoon light soy sauce; 1 tablespoon mirin; 1 tablespoon cooking sake; 1 tablespoon miso paste; 1 teaspoon sesame oil; 2 spring onion (thinly sliced); 1 teaspoon white sesame seeds; ½ teaspoon black sesame seeds; 1 teaspoon Shichimi Togarashi; Handful of freshly chopped coriander leaves