Soak the almonds overnight in filtered water. I placed the almonds in a quart mason jar and then filled it with water. Let them soak for at least 8 hours.
Rinse the soaked almonds with water and place in the blender. Add 4 cups of water and blend on high until the water is white and frothy. This took just a minute or two with my Vitamix. In a standard blender it might take a minute longer.
Set a fine mesh strainer over a bowl and then line it with a thin tea towel, cloth napkin or cheesecloth. Pour the almond mixture through the cloth into the bowl, about 1/3 at a time, allowing most of it to pass through the cloth before adding more.
Carefully pick up the cloth by the corners and wring the rest of the milk through the strainer into the bowl. Taste the milk and see if it is too nutty for your tastes. I added a pinch of salt and a teaspoon of vanilla to my almond milk.
I also added about a tablespoon of honey to sweeten it. If you are adding the honey, it's easiest to just pour the milk back into the blender and pulse it once or twice to combine.
Pour the almond milk into a glass jar and refrigerate until needed. The milk will separate in the refrigerator; simply give it a light shake before pouring.