Forget expensive beans and pricey filters – if you want a stronger cup of pour-over coffee, just add water slowly, steadily ...

The researchers note that, in particular, pouring the hot water slowly from a goose-neck kettle achieves the ideal height and flow. This creates a slow but focused water jet that favors a tasty brew.

If you're a big fan of espresso, but haven't managed to buy a dedicated espresso machine just yet, there's still a way to ...