Kumquat

Zesty, bright citrus peel, tart and faintly resinous, with an exotic, almost orange-like sweetness at its heart.

• Kumquats are eaten whole, skin and all, and that is where the surprise lies: the thin peel is sweet, while the flesh inside is sour.

Kumquat peel oil is around 95% limonene, followed at a distance by myrcene and germacrene D at roughly 1 to 2% each.