Dissolve the espresso

• Combine the instant espresso, brown sugar and cinnamon in a small bowl.
• Pour in the hot water and whisk until the sugar and espresso are fully dissolved.

Shake with ice

• Fill a glass or shaker with ice cubes.
• Pour the espresso mixture over the ice and shake or stir vigorously until well chilled and slightly frothy.

Finish with oat milk

• Top with the cold oat milk and stir gently.
• Add a little extra ice if needed and serve immediately.