アクが強つよい

expression, i-adjective

strong alkaline taste; harsh taste

Describes food or drink with a pronounced bitter, astringent, or alkaline taste, often from tannins or lye.

• この山さん菜さいはアクが強つよいので、よく茹ゆでてから使つかいます。

  These wild vegetables have a strong alkaline taste, so we boil them well before using.

expression, i-adjective

strong-willed; individualistic; idiosyncratic

Figurative use describing a person with a strong, sometimes difficult personality; often implies stubbornness or a distinctive character.

• 彼かれはアクが強つよいけど、仕し事ごとは確たしかだ。

  He's a bit idiosyncratic, but his work is solid.