Prepare the Filling (Key for Juiciness)Mix chopped cabbage with ½ tsp salt. Let sit 10-20 minutes to draw out moisture. Squeeze firmly in a clean kitchen towel or cheesecloth to remove as much water as possible. In a large bowl, combine the drained cabbage with ground pork, chives/green onions, garlic, ginger, soy sauce, sesame oil, and any optional seasonings. Mix thoroughly with your hands until the mixture becomes sticky and well-combined (knead for 1-2 minutes for better texture). A quick taste-test: microwave a tiny bit and adjust seasoning.
Wrap the GyozaDust a tray lightly with cornstarch or line with parchment.
Place a wrapper in your non-dominant hand. Add ~1 level tablespoon of filling in the center (flatten slightly to remove air pockets). Moisten the edge with water (dip finger in a small bowl). Fold in half into a half-moon. Pinch the top center.
Create pleats: Toward center (common style): Make 3-4 pleats on the right side toward the center, pressing each against the back. Repeat on the left. To one side: Make pleats from right to left along the top. Press firmly to seal and shape so the gyoza sits flat. Cover finished ones to prevent drying.
Cook the Gyoza (Crispy Bottom Technique)Heat a non-stick skillet over medium-high. Add 1 tbsp oil.
Place gyoza in a single layer (flat side down), slightly spaced or in a circle. Cook 2-3 minutes until bottoms are golden brown. Add water (about ⅓-½ cup for 10-12 pieces), cover immediately, and steam 3-4 minutes until water mostly evaporates and wrappers look translucent on top. Remove lid. Cook another 1-2 minutes (optionally drizzle sesame oil) until bottoms are deep golden and crispy. Swirl pan if needed. Serve immediately, crispy side up.
Storage & FreezingUncooked: Flash-freeze on a tray, then transfer to a freezer bag (up to 1-2 months).
Cook from frozen — add extra 1-2 minutes steaming.
Cooked: Refrigerate up to 3 days or freeze. Reheat in a skillet.