Though i’m not an expert, I will share what is an ideal serving size according to me. ½ a cup of the above made almond milk makes a single serving for kids above 4 yrs, you can dilute it with water or milk to make it 1 cup. This ½ cup of milk consist app 9 t0 10 almonds. For younger children reduce the serving size to whatever quantity you think is appropriate.
I have soaked the almonds to get smoother milk; you can use the blanched nuts directly for blending as well, but there would be more coarse granules left out in the filter.
I have made this using boiled and cooled water for a better shelf life. The results of shelf life might vary if you use regular water.