Hmm, the nutrition pages off http://recipeland.com/nutrition have two tables detailing listings of all of the RDA vitamins and minerals respectively, located immediately under the Nutrition Facts, calorie and carbs breakdown that you mention. It was not my intention to imply that you're interested in calories, carbs and the like. It's clear to me you are looking for the vitamins and minerals RDA #'s specifically.
In the next week or so hope to have time to add more of the nitty gritty, eg. fatty acids, etc. all from the same USDA info, it's all there in the back-end I just haven't had time to layout the info yet. Pie charts and such will follow later.
I hear ya on how painful it is to try to look up food in the USDA's listing (either on nutritiondata or our site), we're working to make this easier here by linking our existing recipe ingredients to the USDA's version which we will then be able to process into something more user friendly I hope.
The discrepancies in your example over on ND sound like their calculations are out of whack. Accurate on individual foods as they just have to look them up in the USDA data but when combining them sounds as if something's not right and the charts are likely just inaccurate "editorial opinion".
Hopefully as we progress on the nutrition integration here it will become easier to locate foods that are rich in what the visitor is looking for.
Sorting on specific vitamins and minerals shouldn't be too difficult, for us it's more of a challenge figuring out how make the user interface easy to use while offering the detail for those who wish for it.
On the development plate here is:
-sorting the foods by vitamin or mineral to more easily find foods rich in specific nutrients
-searching and sorting the 53k recipes we have to locate those rich in specific nutrients
-displaying nutrition information dynamically so that when creating or adding a recipe the impact of each ingredient is clearly visible (and ensuring that the resulting chart is accurate and makes sense!)
Will post here once the functionality is up and running. I think once we get this working it will become a lot easier to create "the perfect recipe". :)
You're looking to equal 100% of RDA? I assume it would be ok to exceed 100% on some nutrients and that your goal is to meet or exceed 100% on all of the RDA guidelines as far as vitamins and minerals are concerned.