span not vertically aligning text in the middle

All, I have the following code:

<span style="width:450px; height:207px; display:inline-block; vertical-align:middle; padding:0 0 0 10px; text-align:left;">
<b>Recipe Added By:</b> Test Person<br>
<b>Prep Time:</b> aljsdf<br>
<b>Cook Time:</b> asldfjdsf<br>
<b>Recipe Yield:</b> asflja<br>
<b>Recipe Category:</b> Main Dish   
</span>

This displays the text but the text is always aligned at the top. Any idea on how to center the text in the middle of the span?