Taxonomy Filter

<form method="GET" class="wine-search">

<label for="varieties">All varieties:</label>
<select name="varieties[]" id="varieties">
<option value="" disabled selected>Select a variety</option>
<?php 
$svarieties = get_terms([
'taxonomy' => 'varieties',
'hide_empty' => false,
]);
foreach ($svarieties as $sv) { ?>
<option value="<?php echo $sv->name ?>" <?php selected( (isset($_GET['varieties']) && in_array($sv->name, $_GET['varieties'])) ) ?>><?php echo $sv->name ?></option>
<?php } ?>
</select>

<label for="years">All years:</label>
<select name="years[]" id="years">
<option value="" disabled selected>Select a year</option>
<?php 
$syears = get_terms([
'taxonomy' => 'years',
'hide_empty' => false,
]);
foreach ($syears as $sy) { ?>
<option value="<?php echo $sy->name ?>" <?php selected( (isset($_GET['years']) && in_array($sy->name, $_GET['years'])) ) ?>><?php echo $sy->name ?></option>
<?php } ?>
</select>

<label for="awards">All awards:</label>
<select name="awards[]" id="awards">
<option value="" disabled selected>Select a year</option>
<?php 
$sawards = get_terms([
'taxonomy' => 'awards',
'hide_empty' => false,
]);
foreach ($sawards as $sa) { ?>
<option value="<?php echo $sa->name ?>" <?php selected( (isset($_GET['awards']) && in_array($sa->name, $_GET['awards'])) ) ?>><?php echo $sa->name ?></option>
<?php } ?>
</select>

<button type="submit">Show wines</button>

<a href="#" class="clear-wine-seach">Clear</a>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script type="text/javascript">
jQuery(document).ready(function($){
$('.clear-wine-seach').click(function(e) {
e.preventDefault();
$('.wine-search').find('select').prop('selectedIndex',0);
})
});
</script>

</form>