food scraps, leftovers, leftover food

boiled gyoza (dumpling)

entirely

the whole thing; everything

gyoza: a kind of dumpling or potsticker with a thin skin, traditionally made with minced pork and then fried, boiled, or steamed

conjunctive form of 残す (nokosu) [godan]

leave over, leave behind, let remain / hand down to relatives, the next generation

to eat / (archaic, humble) to eat or drink

one thing

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend