Setting selected option in with data-content

Hi. I am using the "Customized with Labels" select tag example:
<div class="col-md-6 bottommargin-sm">
<div class="white-section">
<label>Customized with Icons:</label>
<select class="selectpicker">
<option data-icon="icon-glass">Mustard</option>
<option data-icon="icon-signal">Ketchup</option>
<option data-icon="icon-camera3">Relish</option>
</select>
</div>
</div>

How do I set an option using jQuery?

usually it's something like this:
$("#id").val("2").change();
but it's not working (of course I added IDs for the options).

Thanks,
Shani.