The oil is pale yellow, having a sweetish sharp, burning taste, and a penetrating odor resembling that of the fruit. It gradually becomes darker in color.
The oil of ajwain is an almost colourless to brownish liquid with characteristic oddour and a sharp hot taste. Ajwain is called omam in the southern part of India. AJwain is cultivated in black soil particularly along the riverbank throughout India and also Iran, Egypt and Afghanistan. It is a small, erect, annual shrub with soft fine hairs.
A reed like aquatic plant about 1 meter high, with sword shape leaves and small greenish-yellow flowers. It grows on the margins of lakes and streams with the long branched rhizome immersed int he mud. The whole plant is aromatic.
It grows up to 4 meters (13 feet) high and has long, green silky blades, small yellowy flowers with a violet tip and a large fleshy rhizome, similar to ginger. Oblong gray fruits follow the flowers, each containing many seeds.
Cinnamon trees are 10-15 meters (32.8-49.2 feet) tall. The leaves are ovateoblong in shape, 7-18 cm (1.75-7.1 inches) long. The flowers, which are arranged in panicles, have a greenish color, and have a distinct odor. The fruit is a purple 1-cm berry containing a single seed.
Citronella oil has been used as flavoring for foods and beverage in very low quantities (approximately 45 ppm). Java citronella has the higher alcohol content among the citronella oils.
A herbaceous perennial plant with yellow composite flowers growing in the Himalayan highlands. It is also extracts by using vacuum distillation of the resinoid extract obtained by extraction of the roots with solvents. It has a peculiar soft, but extremely tenacious odour.
Cumin or cuminum cyminum is an aromatic spice known for its unique, bitter and warm flavor. It is a small annual herb about 50 cm (20 inches) high, with deep green, narrow feathery leaves and tiny white or pink flowers, followed by small oblong seeds.
It is an evergreen tree that grows up to 20 meters (65 feet) with dense foliage and small dull-yellow flowers. The fruit resembles a small peach and the oil is obtained from the kernel of the seeds.
Patchouli grows well in warm to tropical climates. It thrives in hot weather but not direct sunlight. If the plant withers due to lack of watering, it will recover well and quickly after it has been watered. The seed-bearing flowers are very fragrant and bloom in late fall.
Nayaganj, Kanpur, Uttar Pradesh 