Add the ¾ cup dashi stock, 1 tablespoon hatcho miso, 2 tablespoon oyster sauce, 1 tablespoon mirin, and 2 teaspoons potato starch to a bowl and mash the miso up to help it dissolve into the sauce.
¾ cup dashi stock, 1 tablespoon hatcho miso, 2 tablespoon oyster sauce, 1 tablespoon mirin, 2 teaspoons potato starch
Start preheating 1 inch of vegetable oil in a heavy pot with high sides to 360°F (180°C). Prepare a wire rack over a metal tray.
vegetable oil
Trim the tops off the 450 grams Japanese eggplant and cut them into an oblique cut by slicing off a piece at a 45-degree angle, rotating the eggplant a quarter turn, and then slicing off another piece at the same angle.
450 grams Japanese eggplant
Flash fry the eggplant in batches for 1 minute and then transfer it to the wire rack to drain. Repeat until all of the eggplant is fried.
Lay down 3-4 sheets of paper towels on a work surface, and spread the fried eggplant on top in a single layer. Next, use another 3-4 sheets of paper towels to gently press on the eggplant to squeeze out any excess oil. Be careful, as the eggplant may still be very hot.
Heat a frying pan over medium-high heat and add 1 tablespoon vegetable oil along with the 10 grams garlic and 5 grams ginger, and stir-fry until fragrant (about 30 seconds).
1 tablespoon vegetable oil, 10 grams garlic, 5 grams ginger
Add the minced 40 grams scallion stems and continue stir-frying until they're translucent (another 1 minute).
40 grams scallion stems
Add the 140 grams ground pork and use the side of the spatula to crumble it up. Continue to stir-fry the pork for about 3 minutes or until it's well browned and has released a lot of oil.
140 grams ground pork
Tip the pan a little and use a paper towel to soak up the excess oil as it drains to one side.
Add the eggplant to the pan and then give the sauce ingredients a stir before pouring it in.
Let the sauce cook with the eggplant until it thickens up and it can absorb the sauce flavors (about 3 minutes).
Finish the Mapo Eggplant with 1 tablespoon rayu, (or to taste,) and garnish with scallion greens.
1 tablespoon rayu, scallion greens