Is it delicious?

You need to know this conversation.
A: 김치 맛있어요? Is Kimchi delicious?
B: 네, 맛있어요. Yes, it is delicious.

A: 이것도 맛있어요? This is delicious too?
B: 이것도 맛있어요. This is delicious too.

A: 다 맛있어요? All are delicious?
B: 흠..저것은 맛없어요. That one is not taste good.

A: 저것은 뭐예요? what is that over there?
B: 몰라요. I dont know.

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