When the special filter jug arrived, I noticed the packaging touted how pure the jug would filter water. I suspect this product would appeal most to those who glorify pure water. However, pure water doesn't mean better water.

Not only does pure water taste “off” without minerals, purified water lacks beneficial additives like fluoride, which reduces tooth decay.

I lean more scientific than woo-woo, so I'm using the special filter jug for a specific alternative purpose: achieving a precise level of hardness and alkalinity specified by this Barista Hustle recipe.