The Oat Barista Blend is a plant-based milk that is made from oats and is designed to be used in coffee. It is described as creamy and frothy, making it a suitable choice for those who enjoy lattes or iced coffee. The milk is fortified with calcium, which adds to its nutritional value. It is said to have a rich and satisfying taste that complements coffee, and it is priced affordably. The product is marketed as a way to elevate one's daily coffee experience while being sustainable.