Oat milk is easy to make at home if you have a blender and fine mesh strainer. Just blend one cup of oats with four cups of cold water together until smooth and creamy, about 30 seconds. Then, strain out the remaining oat sediment once or twice to get a creamy consistency. If you want to add sweetness to homemade oat milk, try blending it with Medjool dates, maple syrup, or honey. Add extra flavor with vanilla or almond extract or your favorite warming spices—from cinnamon and ginger to cardamom.