Pour water, milk, syrup, and Crio Bru into the pressure cooker pot.Secure the lid and turn pressure release knob to a sealed position. Cook at high pressure for 5 minutes.When cooking is complete, use a natural release for 10 minutes and then release any remaining pressure.Place a fine mesh sieve over a large bowl and pour Crio Bru through the sieve to filter out the grounds.Let Crio cool slightly, then pour into ice cube trays (my trays fit about 1 tablespoon per cube). Freeze until solid then transfer to a gallon size freezer bag.To make Frozen Crio Bru: Add 12 cubes of frozen Crio Bru, milk, and banana to a high powered blender and blend until smooth. Add more milk if needed to help it blend. Grab a spoon and a smoothie straw and Enjoy!Optional: Top with a dollop of chocolate whipped cream and a sprinkle of mini chocolate chips or chocolate shavingsTo make Chocolate Whipped Cream: Add cream, cocoa powder, powdered sugar, and vanilla to a high powered blender. Blend on medium speed until thick. (This can also be done with a bowl and a hand mixer). Store in a sealed container in the fridge. Will stay thick up to 5 days.