As a detective, I approached the clue “Lager-head?” with curiosity and critical thinking. My initial thought was to break down the clue into its individual components to look for any hidden meanings. I honed in on the word “lager” and brainstormed possible synonyms, such as beer or ale. However, it was the word “head” in the clue that struck me as particularly significant. I immediately thought of “head” as a term for the foam that sits on top of a freshly pulled pint of beer – this is particularly true for lagers. As a result, I deduced that the answer to the crossword clue was likely to be a word associated with beer foam, such as “froth.” My hunch was confirmed when I later learned that “froth” is indeed a commonly used term to describe the head or foam on top of a freshly poured beer. By breaking down the clue and considering different interpretations, I was able to solve the mystery and uncover the answer to this intriguing puzzle.