Prep the orange zest. Wash and dry an orange.
Use a microplane to zest only the bright orange part of the peel. Avoid the white pith, which is bitter.
Build your base. Add almond milk, Greek yogurt (or coconut cream), vanilla extract, and your protein powder to the blender.
Layer in the flavor. Add the orange zest, orange extract, sweetener, and a pinch of sea salt.
Customize. If using heavy cream or MCT oil, add it now for extra richness. Add chia or flax if you want more fiber and a thicker texture.
Add ice and blend. Start with 1 cup of ice.
Blend on high until smooth and creamy, 30–45 seconds. If you want it frostier, add more ice and blend again.
Taste and adjust. If you want a stronger orange note, add a drop or two more orange extract. If it needs more sweetness, add a little sweetener and pulse.
Serve immediately. Pour into a chilled glass.
For a fun touch, garnish with extra zest or a dollop of whipped cream (keto-friendly).