Fill your glass (or gourd) about half full with loose leaf yerba mate.
Cover the glass with your palm and turn it sideways so that the yerba mate will be on the other side.
Place your bombilla on the side of the glass where there is empty space. Add a few ice cubes.
Pour water into the gourd, but don’t fill it all the way. Let it steep for just a moment, to increase the amount of flavor. You can also use a mixture of water and fruit juice, and add some fresh mint.
Enjoy your tereré! Avoid moving the bombilla while drinking it, so that the particles don’t go inside.
When there is no more liquid, fill the glass or gourd again with cold liquid. You can keep on refilling it until the yerba starts to lose its taste.