How many letters does the top answer for “wrote interview with the vampire” have?

The most common answer is rice (4 letters).

Crossword clue: wrote interview with the vampire

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

rice 4 letters wd-fact-v3

grains used as food either unpolished or more often polished

wrote vampires 67% similar → carpenter

author of interview with the vampire 50% similar → rice

wrote the vampire diaries 50% similar → smith