Make-ahead syrup base: Triple the maple syrup, vanilla, and cinnamon and whisk together in a small jar. Store in the fridge for up to 2 weeks. Each morning use 1 1/2 tablespoons of the mixture with your hot espresso.
Hot version: Skip the ice and shake with hot milk instead. Warm milk on the stove until steaming, then pour shaken coffee over it.
Dairy-free: Oat milk works best; avoid thin almond milk.
Keto: Use sugar-free maple syrup and unsweetened almond or coconut milk. Add a pinch of salt.