(A) The candy tastes like lemon.
That's OK.
(B) The candy tastes like a lemon.
I'm less sure about this.
If you are talking about one particular candy then it would be OK, though I think you should say "This candy tastes like (a) lemon."
(C) The candy tastes like lemons.
That's OK.
Are these all correct because both chicken and lemon can be uncountable?[/quote]