Weird Stuff In Japan part 2

A: I want to make some meat sauce for my spaghetti. Its too expensive to buy tomatoes fresh and the canned stuff isn't that nice. What ever shall I do now?!

B: It simplez. Buy some sauce in a bag, dunk it in boiling water for 5 minutes, pour onto desired dish and stir. Voila, instant Delicious sauce.

A: But isn't it weird to heat stuff in their bags, in boiling water? It seems strange to me...

B: Eh, well, whatever. It tastes good. You can worry about it later.

A: Ah, right. Oki doki.*

*Note - Any references to real people is a fluke. Converstaion and persons A + B are fictional characters.