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Pour in 50g of freshly boiled water to bloom the coffee, making sure all the coffee is saturated. After 30secs, add the remaining 200g of water, taking it to a total of 250g. The whole brew should take about 3mins from first pour to the last bit of water going through the coffee bed. If it takes longer than 4mins, coarse up the grind. Shorter than 3mins, make it a touch finer