Pour of any cooking liquid from your 2 C of pre-cooked leafy greens, they don't have to be completely dry just make sure they're not swimming in liquid.
Chop the greens into medium small pieces and place them into a medium-sized bowl with 1 C of chopped mixed herbs, season with 1 T of fish sauce and some good grinds of black pepper, taste and season with salt if necessary. There should be a mild savouriness to the mixture. I found the salinity from the fish sauce was enough to provide that and didn't add any salt.
Mix in 2 T of corn starch until dissolved.
Add 6 eggs and mix to coat everything evenly.
Preheat a 12" or 30 cm ⌀ frying pan and add 2 T of neutral oil to lightly coat the bottom.
Once the oil starts to ripple, use a 1/4 c measuring cup or serving spoon to scoop the egg mixture from the bowl into the pan, depositing 3 to 4 scoops into the pan to create separate pancakes. Spread them out slightly with the bottom of your scooper. Some of the egg should drizzle out to crate frilly edges.
Pan-fry the pancakes and flip after a minute or 2 or when the edges look golden brown and crisp, and cook for another minute or so on the other side. Move to a platter or rack. Add some additional oil to your pan until you've used up all the batter and have a nice stack of trứng chiên rau thơm.
Serve with rice or on some bread with sriracha, hoisin sauce, Viet-chili or chili-garlic sauce.