Oil, for greasing the steamer basketor line the bottom with perforated parchment paper
Procédé
Pan-Frying Method
Heat a skillet over medium-high heat with 1 tablespoon of oil.
Add the frozen gyoza straight from the freezer and cook for 2 minutes, without turning, until the bottoms are golden.
Pour 4 tablespoons of water into the skillet, then cover.
Let boil for 2 minutes so the gyoza finish cooking.
Uncover and cook for up to 1 more minute, until any excess water has evaporated.
Serve the gyoza hot.
Steaming Method
Bring water to a boil in a saucepan.
Lightly oil the steamer basket.
Remove the frozen gyoza from the freezer and arrange them in the steamer basket.
Place the basket over the saucepan of boiling water.
Steam for about 15 minutes.
Serve the gyoza hot.
Notes
I based this in part on the method described by Ajinomoto. The difference is that they thaw the gyoza before steaming; personally, I’ve never done that with frozen gyoza.