Step 1

Gather all the ingredients. Set the oven rack in the center of the oven, which is roughly 7 inches (18 cm) away from the heating element. Preheat the oven to 425ºF (220ºC). For a convection oven, reduce cooking temperature by 25ºF (15ºC).

Step 2

In a small bowl, combine miso and sugar. Mix well until the sugar is dissolved.

Step 3

Add mirin and gradually add sake to your preferred consistency (some miso might be chunkier than others). Mix well and set aside.

Step 4

Cut off the stem and calyx of the eggplants and cut them in half lengthwise from the stem to the bottom creating boat-like halves. If your eggplants are long, you can cut them in half widthwise.

Step 5

With the knife, score the eggplant flesh diagonally, about ⅛ inch (3 mm) deep and ⅛ inch (3 mm) wide, into a criss-cross pattern on the open surface. This criss-cross scoring helps cook the eggplant faster and improve the presentation.

Step 6

Soak the eggplant in water for 10 minutes to remove the astringency of the eggplant. Blot the eggplants with paper towels or a clean kitchen towel and place them on a baking sheet lined with parchment paper

Step 7

Brush the eggplant flesh with sesame oil. Place the eggplants, cut side down, on the baking sheet.

Step 8

Bake the eggplant at 425ºF (220ºC) for 15 minutes.

Step 9

Meanwhile, cut the green onion into thin rounds.

Step 10

Roll up shiso leaves and cut them into julienned strips.

Step 11

At 15 minutes timer, check if the skin is beginning to shrivel and the flesh is soft and remove the baking sheet from the oven. Now change the oven setting and preheat the broiler. Keep the oven rack in the center of the oven, roughly 7 inches (18 cm) away from the heating element.

Step 12

Carefully turn the eggplants over, and brush them with the sweet miso glaze.

Step 13

Place the eggplant under the broiler and broil for 3-5 minutes, or until the glaze begins to bubble, and remove from the broiler. Please note that the cooking time varies based on how far the baking sheet is placed from the heating element.

Step 14

Sprinkle the baked eggplants with sesame seeds, green onion, and shiso leaves. Serve immediately.

Step 15

You can keep the leftovers in an airtight container and store it in the refrigerator for up to 3 days.