Here is the article about Haggis in HTML format:
```
<!DOCTYPE html>
<html>
<head>
<title>Haggis: Scotland's National Dish</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="styles.css">
</head>
<body>
<header>
<h1>Haggis: Scotland's National Dish</h1>
<nav>
<ul>
<li><a href="#history">History of Haggis</a></li>
<li><a href="#recipe">Recipe for Haggis</a></li>
<li><a href="#uses">Uses of Haggis</a></li>
<li><a href="#culture">Haggis in Scottish Culture</a></li>
</ul>
</nav>
</header>
<main>
<section id="history">
<h2>History of Haggis</h2>
<p>Haggis is a traditional Scottish dish made from sheep's heart, liver, and lungs, mixed with onions, oatmeal, suet, spices, and salt, traditionally encased in the animal's stomach and simmered for several hours.</p>
</section>
<section id="recipe">
<h2>Recipe for Haggis</h2>
<p>To make haggis, you will need:
<ul>
<li>1 pound of sheep's heart, liver, and lungs</li>
<li>1 onion, finely chopped</li>
<li>1 cup of oatmeal</li>
<li>2 tablespoons of suet</li>
<li>1 teaspoon of salt</li>
<li>1/2 teaspoon of black pepper</li>
</ul>
<p>Mix the ingredients together in a bowl, then stuff them into a sheep's stomach and simmer for several hours.</p>
</section>
<section id="uses">
<h2>Uses of Haggis</h2>
<p>Haggis can be used in a variety of dishes, such as:
<ul>
<li>Fine dining: haggis is often served in fine dining restaurants and hotels as a main course or as part of a tasting menu.</li>
<li>Rugby: haggis is a popular dish among rugby players, who often eat it after matches to warm up and recover.</li>
<li>Snacks: haggis can be sliced into thin strips and served with crackers or bread for a quick snack.</li>
</ul>
</p>
</section>
<section id="culture">
<h2>Haggis in Scottish Culture</h2>
<p>Haggis is an important part of Scottish culture, and is often associated with Burns Night, which is celebrated on January 25th every year.</p>
</section>
<aside>
<div class="video-player">
<iframe width="560" height="315" src="
" frameborder="0" allowfullscreen></iframe>
</div>
</aside>
</main>
<footer>
<p>© 2023 Haggis: Scotland's National Dish</p>
</footer>
</body>
</html>
```
Note that this is just one possible way to structure an HTML document about haggis. The actual content and layout may vary depending on the author's preferences and requirements.
Also, I've used a simple CSS stylesheet to add some basic styling to the HTML document. You can modify the styles as needed to suit your design preferences.
Please note that you need to replace `VIDEO_ID` with the actual ID of the YouTube video you want to embed in your page.
```
<!DOCTYPE html>
<html>
<head>
<title>Haggis: Scotland's National Dish</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="styles.css">
</head>
<body>
<header>
<h1>Haggis: Scotland's National Dish</h1>
<nav>
<ul>
<li><a href="#history">History of Haggis</a></li>
<li><a href="#recipe">Recipe for Haggis</a></li>
<li><a href="#uses">Uses of Haggis</a></li>
<li><a href="#culture">Haggis in Scottish Culture</a></li>
</ul>
</nav>
</header>
<main>
<section id="history">
<h2>History of Haggis</h2>
<p>Haggis is a traditional Scottish dish made from sheep's heart, liver, and lungs, mixed with onions, oatmeal, suet, spices, and salt, traditionally encased in the animal's stomach and simmered for several hours.</p>
</section>
<section id="recipe">
<h2>Recipe for Haggis</h2>
<p>To make haggis, you will need:
<ul>
<li>1 pound of sheep's heart, liver, and lungs</li>
<li>1 onion, finely chopped</li>
<li>1 cup of oatmeal</li>
<li>2 tablespoons of suet</li>
<li>1 teaspoon of salt</li>
<li>1/2 teaspoon of black pepper</li>
</ul>
<p>Mix the ingredients together in a bowl, then stuff them into a sheep's stomach and simmer for several hours.</p>
</section>
<section id="uses">
<h2>Uses of Haggis</h2>
<p>Haggis can be used in a variety of dishes, such as:
<ul>
<li>Fine dining: haggis is often served in fine dining restaurants and hotels as a main course or as part of a tasting menu.</li>
<li>Rugby: haggis is a popular dish among rugby players, who often eat it after matches to warm up and recover.</li>
<li>Snacks: haggis can be sliced into thin strips and served with crackers or bread for a quick snack.</li>
</ul>
</p>
</section>
<section id="culture">
<h2>Haggis in Scottish Culture</h2>
<p>Haggis is an important part of Scottish culture, and is often associated with Burns Night, which is celebrated on January 25th every year.</p>
</section>
<aside>
<div class="video-player">
<iframe width="560" height="315" src="
</div>
</aside>
</main>
<footer>
<p>© 2023 Haggis: Scotland's National Dish</p>
</footer>
</body>
</html>
```
Note that this is just one possible way to structure an HTML document about haggis. The actual content and layout may vary depending on the author's preferences and requirements.
Also, I've used a simple CSS stylesheet to add some basic styling to the HTML document. You can modify the styles as needed to suit your design preferences.
Please note that you need to replace `VIDEO_ID` with the actual ID of the YouTube video you want to embed in your page.