How do I solve 1 down in Times Cryptic 29536?

Question

Accepted Answer

1 down reads "Dairy fanatics perhaps reject vegetable" (9,6 letters); the answer is BUTTERNUTSQUASH. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Dairy fanatics perhaps reject vegetable (9,6)

1D — Dairy fanatics perhaps reject vegetable (9,6) — BUTTERNUTSQUASH