teriyaki sauce made with soy sauce, sugar, mirin, etc.
6.
よ
[assertion marker; よ marks new information.]
Translation
A:
What is it? Is it a hamburger?
B:
No, it isn't. It's a teriyaki burger.
A:
Oh? Teriyaki...burger?
B:
Yes, that's right. It's a teriyaki-sauce burger.
Cultural Note
1.
ハンバーガー (hamburgers) are a popular fast food in Japan. In addition to standard Western-style burgers, many restaurants offer items adapted to Japanese tastes, such as teriyaki burgers, burgers with rice buns, or toppings like egg and Japanese-style sauces. These localized menu items reflect how foreign foods are often modified to suit local preferences in Japan.