プログレッシブ和英中辞典(第4版)の解説
ほくほく
❶〔うれしい様子〕
ほくほくして
with satisfaction
計画が図に当たって彼はほくほくだ
He is chuckling to himself over the success of his plan.／He can't hide [conceal] his delight [glee] over the success of his plan.
❷〔煮物などが柔らかくほぐれる様子〕
このいもはほくほくしてうまい
What a good potato! It has a light, dry texture.