1. Combine Liquids and Powder: In a high-speed blender, add the unsweetened almond milk, vanilla protein powder, and sugar-free instant pudding mix.

2. Add Thickener (Optional): If you are using xanthan gum for extra thickness, add it to the blender now. This helps create a more stable and voluminous fluff.

3. Introduce Ice Cubes: Add the ice cubes to the blender. These are essential for chilling the mixture and helping to create the desired fluffy texture.

4. Blend Until Smooth: Secure the lid on your blender and start blending on a low speed, gradually increasing to high. Blend for about 1-2 minutes, or until the mixture is smooth and the ice is fully crushed.

5. Achieve Maximum Fluffiness: Continue blending on high speed for another 1-2 minutes. You’ll notice the mixture starting to thicken and expand, becoming light and airy, almost like soft-serve ice cream. Scrape down the sides of the blender if necessary to ensure everything is incorporated.

6. Taste and Adjust Sweetness: Stop the blender and taste a small spoonful of the fluff. If you prefer it sweeter, add a small amount of your chosen sugar-free sweetener and blend for another 15-30 seconds to combine.

7. Serve Immediately: Pour the protein fluff into a bowl or serving dish. It’s best enjoyed right away when it’s at its peak fluffiness and chill.