I have to mention this because I have been doing alot of studying on the subject recently, iron absorbtion that is.
I see a lot of metion of spinach and other green veggie sources listed here. Only about 5% of the iron available in spinach is actually absorbed for use in the body. It and some other green veggies contain high amounts of oxalic acid, this very much hinders the absorbtion of the iron. So while it is high in iron, it will not help.
Food sources do benifit from complimentation, highest sources being red meats, then poultry and fish, followed by legumes- pinto beans are actually quite high and a great source of iron for those who do not include meat products in their diet.
Meats eaten with fruits high in C of course will prvide better absorbtion than those eaten alone, baked bean with ham, and the iron in bread enhanced by adding a slice of tomato.
Surprising one- per serving size, canned clams have an extreamly high amount of iron, over 18 mg compared to beef, pinto beans and flour tortillas at about 2 mg. surprising two- one cup of fresh chopped parsley contains nearly twice the iron of beef and 3 times that of chicken or tuna.
Also, iron supplements do not seem to be benifited by the taking of Vit C with them. The Vit C assists in breaking down the irons in food from the form they are naturally in to ferrous iron for easier absorbtion, most suppements are already in this form. Ironically, supplements are quite poorly absorbed.
ahh, ok, im done, there is my iron lecture from a nutrition stand point, hopefully it helps someone, sorry if this is not what you were looking for, couldnt stop myself