Kōichirō Miyahara: 1 works in the original Japanese, with translation

Copra is the dried white kernel of the coconut, sun-dried or oven-dried, with a very high oil content. Coconut oil is pressed from it and used to make soap and candles. The line in the text, "私どもはそれで石鹸をつくります" ("We make soap from it"), refers to this.