As more people switch to dairy-free and plant-based diets, manufacturers have taken this opportunity to create alternative dairy products that do not contain lactose. Oatmeal milk, which has flooded the shelves of grocery stores around the world , is one of the most popular substitutes that you will find for lovers of" non-dairy " milk. Cheaper to prepare than almond milk and more environmentally friendly, oat milk contains ground or whole oats soaked in water, which are then mixed and strained with a gauze or special bag.