Preheat the oven to 120 C. Put the espresso and water in a large bowl and stir to combine. Add the oats and raisins and mix well then allow to stand for 20 minutes. Add the maple syrup, sunflower seeds and almonds and mix well. Spread the mixture onto two baking trays lined with baking paper and bake, tossing occasionally for around 45 minutes or until the oats are crisp. They will firm up further as they cool. Allow to cool on the trays and then break up with your hands and store in an airtight container.