sweet and sour; bittersweet
摘みたてのイチゴは甘酸っぱい。
Freshly picked strawberries are sweet and sour.
その青春の思い出は甘酸っぱかった。
Those memories of youth were bittersweet.
ドレッシングは柑橘で甘酸っぱく仕上げた。
The dressing was finished with a sweet and sour citrus flavor.