The morning cup of coffee has an impact that most consumers are unaware of. A real impact, in terms of carbon and water. New forms of stimulants are also appearing on the shelves and at the checkout in the UK, from caffeine pouches to concentrated shots, and they raise a legitimate question. The figures associated with a cup of coffee are higher than marketing tends to suggest. So how does coffee actually compare to small-format alternatives, per serving, by the kettle? The hidden weight of your morning brew Most of coffee’s environmental cost is paid before the beans leave the farm.…