Even if you bought the latest and greatest coffee machine the thick creamy froth of a store-bought espresso is hard to replicate at home. Why? It all boils down to pressure (pun fully intended).
That's right. Pressure makes a world of a difference when it comes to brewing coffee. It affects taste, color, aroma and texture - and that's just the tip of the iceberg.
There's actually a lot of science that goes into making that perfect cup of coffee as you'll see in this video from the Science Channel. Take a peak inside a deluxe coffee maker so you can see how pressure affects every cup of coffee:
Still curious about coffee? Learn all about these 23 coffees that all begin with a humble espresso - everything from a doppio to a ristretto and café bombon.