Live Search Select Picker

HTML

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.2/css/bootstrap.css">
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.3/css/bootstrap-select.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.2/js/bootstrap.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.3/js/bootstrap-select.js"></script>
 <select class="selectpicker remove-example" multiple>
    <option  id="Mustard" value="">Mustard</option>
     <option data-subtext="50g" class="Mustard hider padd">Mustard2</option>
     <option data-subtext="1kg" class="Mustard hider padd">Mustard3</option>
    <option id="Ketchup">Ketchup</option>
     <option data-subtext="50g" class="Ketchup hider padd">Ketchup2</option>
     <option data-subtext="1kg" class="Ketchup hider padd">Ketchup3</option>
    <option value="Relish">Relish</option>
  </select>


<button class="btn btn-success rm-mustard1">Show Mustard</button>
<button class="btn btn-warning rm-mustard">Remove again</button>

CSS

.btn-primary {
  padding: 0px 74px;
  margin-top: 5px;
}                
#tastes {
  margin: 15px 0px 0px 15px;
}

.padd {
 margin-left:20px;   
}
}

JavaScript

$('.remove-example').find('.hider').hide();

  $('.selectpicker').change(function() {

      var feta = $(this).find("option:selected:first").attr('id');
      var feta1 = $(this).find("option:selected:last").attr('id');
      
      $('.remove-example').find('.' + feta).show();
      $('.remove-example').find('.' + feta1).show();
      
    $('.remove-example').selectpicker('refresh');

  });




$('.rm-mustard').click(function() {
    $('.remove-example').find('.Mustard').hide();
    $('.remove-example').selectpicker('refresh');
  });
  $('.rm-mustard1').click(function() {
    $('.remove-example').find('.Mustard').show();
    $('.remove-example').selectpicker('refresh');
  });