It has Chocolate bar and the solution is hard to pass, as it is enticing and impossible to resist which is a usual playful hint in the New York Times Crossword.
In the New York Times Crossword, the clue “Kind of bar that’s hard to pass” is commonly answered as “limbo.” It refers to the limbo bar in the dance game, which players must bend backward to pass under without touching.
The answer is “law bar” as in the bar exam, which is definitely hard to pass.