While organ meats have gotten a little more attention in the Paleo community recently, many people still don't quite appreciate how vital it is to include these nutritional powerhouses in their regular diet. Plus, knowing we should be eating offal and actually eating these foods are two very different things. Though some people do love the taste of foods like liver, most people (myself included) don't like the taste of organ meats and need to be persuaded to eat them.

In an effort to help you take the plunge into eating the whole animal, here are my thoughts on the top three organ meats to start out with and why.

Beef Tongue

Because tongue is still technically muscle meat, the nutritional profile is similar to that of other beef muscle meats. It's a good source of iron, zinc, choline, vitamin B12, other B vitamins, and trace minerals. (1) Tongue is a fatty cut of meat, with about 70% of its calories coming from fat, making it one of the most tender cuts of beef you can find.

Surprisingly, one of tongue's biggest claims to fame is the taste. It's also one of the easiest organ meats to cook. Once people get over the fact that it's a tongue, they often find they like it better than other, more 'normal' meats! If you're venturing into the world of organ meats for the first time, tongue is a great starting point. It will probably take a couple tries to get completely over the 'ick' factor (after all, it looks like a tongue), but the ease of cooking and the agreeable taste should make that process easier. Further, it should prepare you mentally for other organ meats, which can be a little harder to tackle!

Here are some tongue recipes to try: Heart

Once you're comfortable eating tongue, heart can be a good next step. As with tongue, many people are pleasantly surprised when they taste heart, because despite its somewhat threatening outward appearance, its taste and texture have been compared to that of steak or brisket.

Like other red meat, heart is a good source of iron, zinc, selenium, and B vitamins, but where heart really shines is its CoQ10 content. CoQ10 is vital for energy production and prevention of oxidative stress, and people with chronic health conditions are often deficient. There are also some genetic factors that can impede the biosynthesis of CoQ10, making it more important for those people to have a source of pre-formed CoQ10 in their diet.

Heart is the best food source of CoQ10, with pork heart and beef heart topping the list at approximately 127 mcg/g and 113 mcg/g, respectively. (2) By comparison, sardines supply only about 64 mcg/g, beef liver contains 39 mcg, beef muscle meat contains 31 mcg, and pork muscle meat has anywhere from 24 to 41 mcg.

Unlike tongue, heart is extremely lean, so you want to be sure to cook it properly. One option is to grind it up and add it to ground beef. Here are some other ways to eat heart: Liver

You didn't think I'd write an article on organ meats without including liver, did you? While tongue and heart are both excellent choices and great introductions to organ meat consumption, liver is by far the most important organ meat you should be eating. It's one of the most nutrient-dense foods in existence, and contains many nutrients that are difficult to get elsewhere.

Liver is an important source of retinol, which is pre-formed vitamin A. Just three ounces of beef liver contains 26,973 IU of vitamin A, while pork liver and chicken liver contain 15,306 IU and 11,335 IU, respectively. (3) If you aren't supplementing with cod liver oil, you'll probably want to eat liver a couple times a week to make sure you're getting enough vitamin A, especially if you have skin problems.

Folate, choline, and vitamin B12 are three more nutrients that are found abundantly in liver, and they can be especially important in the context of a Paleo diet. Two Paleo staples - muscle meat and eggs - contain a high proportion of the amino acid methionine, and higher intakes of methionine increase homocysteine production. This increases the need for vitamins B6, B12, folate, betaine, and choline, which recycle homocysteine. (4, 5)

Although all meats contain some amount of vitamin B12, liver (especially beef liver) blows everything else out of the water, with almost three times as much B12 as kidney, seven times as much as heart, and about 17 times as much as tongue or ground beef. (6) Choline is concentrated mainly in egg yolks and liver, so if you aren't eating egg yolks it's important to get some liver into your diet. And as Chris Masterjohn points out, it can be difficult to get enough folate on a Paleo diet without including liver, because other than liver, beans are actually one of the best sources of folate. This is especially true if you eat lots of muscle meat and not enough folate-rich greens.

One of the main nutritional differences among the livers of different animals is copper content. Beef liver contains 14.3mg of copper per 100g, while chicken and pork livers contain less than 1mg. (7) Thus, beef liver is a great choice if you tend towards copper deficiency, but as I mentioned in this podcast, copper excess can also be a problem. Luckily the choline, zinc, and B vitamins in liver significantly reduce the risk of copper toxicity, but if you need to limit copper in your diet, you can always opt for chicken or pork liver instead.

Unfortunately, the taste of liver can take some getting used to. But even if you're one of the unlucky people (like myself) who don't particularly enjoy the taste, it's possible to develop a tolerance for it, especially if you find a good recipe. You can always start out by grinding it up and adding it to ground meat, but if you're ready for something a bit more adventurous, you can try these recipes: Once you've started eating liver regularly, maybe you'll be interested in trying other unorthodox cuts of meat and less popular parts of the animal. Mark Sisson has written before about eating heads, feet, tails, and everything in between. Perhaps you'll give tripe a try, or attempt a kidney recipe. Maybe you'll even get the guts to try some of the more adventurous animal parts, such as "sweetbreads" (pancreas), blood, or maybe even "oysters" (testicles). In fact, Chowstalker even has a whole list of offal recipes to get creative with. No excuses... and no fear!

Do you have any tips for people who are intimidated by organ meats? Which are your favorites, and how do you prepare them? Share your thoughts in the comments!