Kidney beans contain a massive amount of iron. However just because a food is dense in a particular vitamin/nutrient doesn’t mean our body can properly absorb it all. What steps should be taken to get the most use out of the iron in kidney beans?
Consume it alongside sugars, acids, meat, or copper. Do not consume it alongside tea or coffee, or anything high in calcium or zinc. Considering kidney beans have phytates, which inhibit iron absorption, there’s only so much you can do.