Crossword puzzle clue "code and sea lemon for two"

Code and sea-lemon, for two

Secret code, in the secret code

Code hidden in a bar code

One two of two-and-two

Event in which two people have two hands and two feet on the ground

The "two" in "two if by sea"

___ grecque (cooked in olive oil, lemon juice, wine, and herbs, and served cold)

Fish dish served with lemon and pepper, simmered in pretty hate and dissonant synthesizer lines?