Edit in JSFiddle

<select class="selectpicker">
    <option data-content="First Line<br>Second Line">Mustard</option>
    <option data-content="House Number Street<br>City, State<br>Zip Code">Ketchup</option>
    <option data-content="Single line address">Third Address</option>
  </select>

$('.selectpicker').selectpicker();