place a muslin cloth over a deep jug (mine is 16cm deep x 14cm diameter).place 2 elastic bands around the muslin, securing them under the jug handle.lift elastic bands as you press down into the centre of the jug with your fist to make a well for the yoghurt to sit into.tie knots with the corners of the muslin cloth so they won't touch the fridge surface.scoop yoghurt into the muslin well (if you find the well isn't deep enough, just press down the middle with your spoon to create more depth).place in the fridge to strain for 3-4 hours.scoop yoghurt away from cheesecloth into its original container.add stevia crystals and stir really well.cover and store for 3-4 days in the fridge.serve on its own or with berries, nuts, chia seeds.