Are these sentences OK?
I was wondering whether you saw it or not. (a movie etc.)
We agreed on a price, but then he gave up selling it.

(something to eat)
You never know how tasty something until you try it.
You never know how tasty something without tasting it.

Question

Are these sentences OK?
I was wondering whether you saw it or not.  (a movie etc.)
We agreed on a price, but then he gave up selling it.

(something to eat)
You never know how tasty something until you try it.
You never know how tasty something without tasting it.

Answer

The first sentence is correct. Just missing "is" from the other two sentences.
You never know how tasty something "is" until you try it.
You never know how tasty something "is" without tasting it.