Ciclo base di wp query con custom post
<?php
$query = new WP_Query( array( 'post_type' => 'prodotti' ) );
// Il Loop
while ( $query->have_posts() ) : $query->the_post();
echo '<li>' . get_the_title() . '</li>';
endwhile;
// Ripristina Query & Post Data originali
wp_reset_query();
wp_reset_postdata();