Add almond milk to the jar first, then protein powder and chia seeds. If using, add sweetener and cocoa powder now, starting with liquid helps prevent clumping.

Seal the jar tightly and shake vigorously for 30-45 seconds, or whisk in a bowl for about a minute until there are no clumps. The mixture should be completely smooth and slightly frothy.

Cover tightly and refrigerate for at least 30 minutes for a softer pudding, or preferably overnight for the thickest, creamiest texture. The chia seeds need time to absorb liquid.

Stir well before serving since chia seeds may have settled. If too thick, add a splash of milk and stir again. Top with fresh berries, nuts, or shredded coconut if desired.