Fortified milk
Cow’s milk is fortified with vitamin D to help consumers get enough of it. According to the American Dairy Council, milk fortified with vitamin D should contain at least 100 IU and up to 150 IU of vitamin D per serving. For example, one cup of fortified milk provides 104 IU, which is 17% of the daily value. Of course, vitamin D is not the only important nutrient you will get from fortified milk, as each cup also contains calcium, phosphorus, potassium and protein.
Plant-based fortified milk
Fortified orange juice
Mushroom stock
Mushrooms are a plant food that naturally provides vitamin D. When cooked on low heat in a soup, they can provide a good dose of the vitamin. Its content in the soup depends on whether the mushrooms have been treated with ultraviolet light to increase vitamin D levels and how they are processed into the soup. A 2025 study found that prolonged cooking may reduce the availability of vitamin D – so don’t leave the soup on the heat for too long.