Take out a wok. Add in 3 Tablespoons of oil (that you just used to fry the paste). Place on medium-high heat. Once hot, add in the minced pork. Stir-fry it around until most of the pink is gone.
Then add in Soy Sauce (1 Tablespoon). Followed by the diced onions, zucchini and potatoes. Stir-fry until the zucchini pieces get soft (~2 minutes).
After 2 minutes, add in the blanched shrimp & squid.
Add in 2 scoops of the stir-fried chunjang paste. Stir well and get everything coated in the black paste. Stir-fry for 1 minute.
Now, add in some water (¾ cup). Followed by Oyster Sauce (2 teaspoons!) and Sugar (1.5-2 teaspoons!). Once the pot comes back up to boil, let it boil away for another 2 minutes.
In the meanwhile, mix Starch Powder (1 Tablespoon) and Water (2 Tablespoon). Slowly drip half of the slurry into the mix. The sauce will thicken-up - add more if needed!
Spread your delicious Samseon Jajang sauce over a bowl of freshly made rice or noodles! Bon Appetit!