Green mandarin is mandarin orange harvested unripe, when the peel oil smells sharply green, bitter and intensely aromatic rather than sweet. It is a completely different animal from ripe mandarin, all zest, bite and green sparkle with remarkable freshness. Perfumers prize it for modern fresh compositions where they want mandarin's familiarity with an edgy, contemporary twist. It has better tenacity than most citruses. In Indian summers, green mandarin is superb, its bitter-green brightness cuts through humidity with precision and smells thoroughly modern. It is the citrus of choice in many cutting-edge niche fresh scents. If sweet mandarin bores you, the green version will wake up your nose.