How do I solve 19 across in Daily Telegraph Cryptic 31253?

Question

Accepted Answer

19 across reads "Bats amused snake-haired monster" (6 letters); the answer is MEDUSA. It's an anagram clue: the answer is a rearrangement of letters supplied by the clue itself. Look for an indicator like 'mixed', 'broken', 'cooked', or 'wild', and find a phrase whose letters add up to the answer's length. The full step-by-step breakdown is on this page.

Bats amused snake-haired monster (6)

19A — Bats amused snake-haired monster (6) — MEDUSA