Substack diary no.169: Sunday, 31st. May 2026
Every now and again I get a ‘bee in my bonnet’ as the saying goes and this morning it was descaling the coffee machine and the kettle and washing out the water filter, which has taken a good hour or so. In so doing I came to think about some of the shortcomings of such technology.
My coffee machine is a KitchenAid, which is quite good but on reflection I should probably have purchased the Sage coffee machine – the only one they make (all the others are espresso machines). The KitchenAid has an indicator light that flashes incessantly – and annoyingly – when it believes descaling is required. How does it know? Well, the simple answer is that it doesn’t; it presumably assumes the worst-case scenario – a hard-water area. South Devon is a very soft-water area. Before I moved to London to go to university I had no idea what ‘scale’ was and, I must admit that I found it rather gross to see in kettles, but people who lived in London seemed to take it for granted.
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