“We call this the London slurp,” Alex Wallace explains, as he loudly ingurgitates a slug of freshly brewed coffee from a warm spoon. Apparently, this way it hits your retronasal olfactory receptors, where you perceive flavour the strongest – although I’m not sure you’ll see it in Costa any time soon. Wallace is head of quality control at Caravan Coffee Roasters, and today we’re enjoying a cupping (coffee tasting) session at their Granary Square site in King’s Cross. I’m here to learn how to brew a great cup of coffee at home, to dip my toe into the rabbit hole of coffee geekery, and to test and review the very best cafetieres that money can buy. The cafetiere is one of the simplest and easiest ways for an entry-level coffee fan like myself to brew at home. Plus, it’s sustainable. A cafetiere doesn’t require any paper filters or capsules, so you can never run out. (If that sounds like just your cup of joe, see the bottom of this article for Wallace’s expert guide to brewing the perfect cafetiere coffee.) We tried out a range of cafetieres, sampling both Caravan’s Daily Blend (£7.50 for 250g whole bean) – a drinkable cof...