In India, chai is more than just a cup of tea to start the day - the thick sweet drink is an integral part of the rhythm of life. Zach Marks and Resham Gellatly have been documenting the culture of Indian chai and the people who sell it - known as chai wallahs.
Tea is India's most popular drink - the country consumes 837,000 tonnes of it every year. The ritual of drinking chai transcends all boundaries, and roadsides are dotted with chai wallahs who serve it boiled up with spices, sugar and milk.
A popular ingredient in north Indian chai, ginger is believed to have numerous health benefits and is thought to keep your body warm in winter. The spicy root has been used in hot, milk-based beverages in India for hundreds of years, so when the British popularised tea in the late 19th and early 20th Centuries, adding ginger to the mix was a natural thing to do.
Several decades ago, chai was served in small clay pots, known as kulhar in Hindi or bhar in Bengali. While the bowls are still popular in Calcutta, plastic cups, tiny glasses and steel tumblers have become the vessels of choice across most of India.
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This photo of my cup of chai
I took with my phone samsung in K