Prepare the ginger. Peel fresh ginger using the edge of a spoon and chop into smaller pieces. Start with 1 inch; you can add more if you want stronger ginger flavor.
Add liquid base. Pour almond milk into the blender first.
Add soft ingredients. Add Greek yogurt, honey, vanilla extract, and protein powder if using.
Add frozen fruit and ginger. Add frozen peach slices and the chopped fresh ginger.
Add ice and spices. Top with ice cubes and a pinch of cinnamon.
Blend very well. This smoothie needs longer blending than other -- at least 90 seconds on high -- to fully break down the ginger. The mixture should be completely smooth with no ginger pieces visible.
Taste and adjust. If ginger flavor is too strong, add more peaches or honey. If too sweet, add more ice or almond milk.
Serve immediately. Pour into a glass and sip slowly. Small sips are easier to tolerate than large gulps when feeling nauseous.