Magnesium supplements or real food?

I have talked about using a magnesium supplement in prior posts. Every once in a while I will stop taking it to get a reality check of a sort. There is no sense in spending tons of money for a supplement if real world eating is working to supply the missing magnesium.   So, I was surprised recently when after stopping the supplemental magnesium, I felt fine after a week or so.  What is different?  Getting back to basics, I started eating more peanut butter almost daily.  This is not a lot as it turns out.  Usually it amounts to a couple of tablespoons of pretty good quality (not Jiff for example) peanut butter- the kind that is just ground peanuts a bit of salt, etc that you have to mix to get the oil blended back in.  It turns out; peanuts have a high amount of magnesium.  Cashews also work, and have more magnesium, and a bit better than that would be almonds.  If you prefer real food to supplements, it is an easy add and probably cheaper in the long run.