Is this sentence OK?

** One is more delicious than the other. **

I mean they are all delicious.

Question

Is this sentence OK?

** One is more delicious than the other. **

I mean they are all delicious.

Answer

Yes this is fine. In this sentence you're still saying that both things are delicious, but that one is more delicious and the other is only the regular amount of delicious. 
This also implies 2 things only. One and the other = 2. 
If you want to talk about multiple things in the same context we could say "some are more delicious than others" - they're still all delicious, but some more than others.

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