<ol>
    <li>Start by mixing dry ingredients.
        <ul>
            <li>Flour</li>
            <li>Salt</li>
            <li>Yeast</li>
        </ul>
    </li>
    <li>Add water.</li>
    <li>Mix until the dough is supple.</li>
</ol>
This is an ordered list: numbers (or other symbols that are used to indicate order) appear next to the list items.
This is the first list item. The number 1 will appear next to the instructions. It also contains another unordered list
This unordered list works as we've seen before. Now it appears inside the first item of the ordered list.
These list items belong to the "original" ordered list.