1) Use pure water. Tap water has minerals and stuff in it that takes away from your nutritional value you should be getting.
This simply isn't true. Minerals in your water has next to no impact on the nutritional value of your food. Now, having bad water might be an issue in its own right, but it's not a nutritional thing.
2) If you are going to use beans that need to be soaked, use pure water, and then use the water you used to soak them to cook.
See above. Additionally, throwing out the water does little to the nutritional value of the bean.
3) Most things lose most of their nutiritional value when cooked, thats why stews and soups are so good, they keep most of the nutritional value in the broth itself.
This is absolutely untrue for a variety of reasons. For instance, if you use meat in your soup, the protein doesn't leach out into the stock - it's still back in the meat. Further, what you are talking about is nutrients leaching out into the water. This only happens with water soluble nutrients. Additionally, the cell membranes mitigate this greatly. If you use a roasting, sauteing or other non-moist heat technique, you will not experience leaching at all.
Finally, cooking actually improves the nutritional value of most foods. The raw food diet fad is a myth of crap. Nutrients become, more, not less available when you cook the food - while SOME nutrients do break down, cooking makes more of those nutrients accessable to your body by making the food easier to digest. This is precisely why we cook foods.
4) Beans are a good source of protein but are also a complex carbohydrate, so they fill you up faster than meat, and provide similiar nutrition value.
Beans do not have a similar nutrition profile to meat. Meat tends to be high in B vitamins and red meat is especially high in iron. This is in addition to all the minerals it contains. Further, meat is a complete protein while beans are absolutely not. I love beans, and they are great nutritionally, but it is not similar at all.
5) Do not use lemon, lemon juice, or chilly sauce in your soups and stews while cooking them. Acidic material takes away from the nutritional value. If you are going to use that stuff, add it seperately in your bowl and do not cook with it. (i don't always follow this concept, I like spicy food a lot!)
This is absolutely not true. Acidifying the cooking liquid will not detract from the nutritional value appreciably. The pH necessary to damage the nutrients would render the food item in question unpalatable. These are fairly stable compounds for the most part and hardly require special treatment - if you can boil it without problems (and you can), a tiny shift in pH isn't going to be an issue (and it doesn't.)
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