How to target a MeTABOX custom field attached to a Woo product

Hi Metabox Users! I am an Oxygen user and am creating a woocommerce restaurant menu. I am using a script to convert the | pipe symbols into <br/> tags so I can force a long entree in he Product title to break into 2 lines. So far so good. The problem is in the backend, because my client has three menus for different times of the year with many of the same entree names( this becomes entree titles on the menus) but with different ingredients and prices, there are three identical product names for each entree. No problem since each have different slugs and taxonomies and setting so they will only show up on their respective meus. Now that I am in fine tuning mode I realized that in the backend if the client wants to add another entree at checkout he will see three of the same entrees based on the product name--confusion!
My solution was to add a metabox custom field to the products called Entree display name. This way I could rename all the products with unique names so the client could easily choose entree-name-menu1 or entree-name-menu2. Everything works ,thank Heaven! But now my original script to convert long titles into two lines using the pipe symbol is not working. Here is the code:
/*ADD LINE BREAK */
add_filter( 'the_title', 'custom_product_title', 10, 2 );
function custom_product_title( $title, $post_id ){
$post_type = get_post_field( 'post_type', $post_id, true );
if( in_array( $post_type, array( 'product', 'product_variation') ) || in_array() ) {
$title = str_replace( '|', '<br/>', $title ); // we replace "|" by "<br>"
}
return $title;
}
in line 4 -- if( in_array( $post_type, array( 'product', 'product_variation') ) ) {
$title = str_replace( '|', '<br/>', $title ); // we replace "|" by "<br>"
}
how do I target the custom METABOX field display_entree_name which I attached to the Product post type so all the Metabox display entree data will appear correctly formatted on the front end?