Coffee can be brewed using only a mug. This method is known as cowboy style coffee. Giddy-up!Add 3 tablespoons, or about 15g of coffee to a cup, then top it up with 225ml of boiling water. Wait 4 minutes then give it a stir. You can now either scoop any ground coffee left floating around on top using a spoon, or not. Wait a few more minutes and most of the coffee will sink to the bottom of the mug.Using this method, you’ll inevitably find a few coffee grinds in your teeth, but hey — think of it as a little extra caffeine! Cowboy style!A good alternative would be the Kuju Pour-Over Coffee. Take some of these bags with you and get a cup of specialty grade coffee right when you need it.