What does the cryptic crossword clue "Food? Pulses the first to get chucked out (4)" mean?

The definition is "Food". The wordplay uses acrostic. EATS (deletion) = EATS; definition: "Food?" The answer is EATS.

Food? Pulses the first to get chucked out (4)

Guardian Cryptic #29109 | 13 Across | 2023-06-29 flower