Simply put, the term Sweet Milk, is antiquated, The term refers to plain, Vitamin D, Whole milk, that is fresh and not spoiled. Fresh milk being sweet, not soured or spoiled. This old way of looking at things is hardly used today. As opposed to buttermilk or spoiled aged milk the recipe would go South if this was not explained. Also if you had used Sweetened Condensed Milk you would not like the outcome. Just so you know!