Brewing Yerba Mate in a french press is very easy, and is prepared very quickly. What you need: French Press Matero Loose Leaf Yerba Mate Hot Water How to brew it: Put 15-20g in the french press. Pour hot water in the french press. Let it steep for a minimum of 7-10 minutes, but you can steep it for as long as you like. Press the Yerba Mate in the french press. Pour it into a cup. Enjoy your freshly brewed Yerba Mate. And that's it! It was that easy.