Few foods naturally contain much vitamin D. In India, look for milk or an edible oil that says it is fortified with vitamin D. If you buy a plant drink, check whether its own label lists added vitamin D.
Check the food you already buy
Look for the +F mark and read which nutrients were added. Some mushrooms provide vitamin D when exposed to UV light. If you are counting on mushrooms for vitamin D, look for a statement on the pack about how they were grown or treated.
Keep the amounts in context
Record the amount per serving and how much you usually have. Keep your usual cooking oil portion. If you are looking up foods because of a low vitamin D result, take the result to your doctor before choosing a supplement. Vitamin D and B12 questions to take to a doctor · FSSAI fortification guide · NIH vitamin D fact sheet
Does a fortified cereal and a multivitamin give you the same vitamins twice?
Two packs can look alike
Compare the milk or plant drink you already buy with the alternative on the next shelf. Check the ingredients and nutrition information for vitamin D and look for the weight or volume the number refers to. If one carton lists the amount per 100 ml, check how much goes into your own glass before comparing. If the amount is missing, leave that entry blank when you make your list. It is still worth bringing the label to an appointment if a doctor has asked what you normally eat.