Piquancy (noun)

The quality of being agreeably stimulating or interesting; a pleasant sharpness or tanginess.

Origin:

From the french "piquant" meaning sharp or pungent.

Examples:

1. The dish had a piquancy that made it stand out among the other menu items.
2. The piquancy of the sauce added a unique flavor to the dish.
3. The wine had a piquancy that made it a perfect match for the spicy food.
4. The piquancy of the conversation kept everyone engaged and interested.
5. The piquancy of the cheese was a perfect complement to the sweet fruit.