What does the cryptic crossword clue "Duff beer drunk by Simpson 40% cut with domestic concoction (8)" mean?

The wordplay uses an anagram. anagram of HOM (synonym="HOM") + BEER (synonym="BEER") + W (synonym="=with") = HOMEBREW The answer is HOMEBREW.

Duff beer drunk by Simpson 40% cut with domestic concoction (8)

Independent Cryptic #11879 | 3 Down | 2024-11-05 flower