Final answer:
Gyoza are dumplings that can be served with a variety of sauces and toppings, but without further context, none of the provided options can be definitively selected as the specific completion for the stated dish.
Step-by-step explanation:
The dish highlighted in the question, Gyoza, refers to Asian-style dumplings that are often served with various types of sauces and toppings. The specific sauces and toppings mentioned in the options provided, such as Teriyaki glaze with sesame seeds, sweet chili sauce with chopped nuts, and soy reduction with green onions, are all possible complements to enhance the flavor of these dumplings. However, to answer the question accurately, based on the fill-in-the-blank format, none of the options provided can be definitively completed without additional context or clarity in the question.
As for the context of dumplings in general, they are a versatile dish that can be found in many different cuisines worldwide. Some dumplings, like the zongzi mentioned, are traditionally associated with festivals and cultural events, such as the Dragon Boat Festival. Others, like the manti mentioned, have historical significance and have evolved into various forms across different regions.