
Place a small saucepan over medium heat. Add a small amount of oil to lightly coat the bottom (1-2 teaspoons). Once the oil is hot, add the white parts of leek and sauté briefly for 20-30 seconds. Then add the green parts and continue to cook for another minute.
Add miso, mirin and sugar. Stir everything together. Cook for about a minute or until well combined and bubbly.
Add water and continue to stir and cook for another 2-3 minutes, until the sauce looks smooth and slightly thick. Taste and adjust to your liking. The sauce will continue to thicken slightly after removing from the heat. Transfer to a clean jar.
Set up your steamer over boiling water. Add carrots and steam for about 3 minutes. Then add the cauliflower, broccoli, okras and steam for another 3 minutes. Finally add bell peppers and steam for 2-3 more minutes.
Transfer steamed vegetables to a serving plate and divide miso dip into small bowls for each person. Serve right away. Leftover dip can be stored in the jar with a tight lid in the refregerator.