Remove the half avocado from the skin and cut the flesh into rough chunks. Make sure the quarter lemon is completely peeled and remove any seeds if present. Rinse the handful of spinach under the tap and let the leaves drain well in a colander.
Pour the 250ml water or almond milk into the blender pitcher. Add the avocado chunks, the peeled lemon and the drained spinach to this. Finally, scoop the tablespoon of collagen powder or hemp seed into the blender pitcher.
Turn on the blender to a low setting and gradually increase the speed. Let the machine run on the highest setting for about one minute. Check that all ingredients are completely blended into a smooth, creamy and even liquid without any rough pieces.
Pour the liquid directly into a glass. Drink it all immediately, so that the nutritional value is optimally preserved and the texture of the drink does not separate.