Add new tabs with the content of Advanced Custom Fields.

bau_woocommerce.php

<?php
/**
 * Add new tabs with the content of Advanced Custom Fields.
 */
add_filter( 'woocommerce_product_tabs', 'bau_woo_remove_product_tabs', 98 );
function bau_woo_remove_product_tabs( $tabs ) {
    // Define, the meta_key of the 
    $bautabs = array(
        'alergenos' => array(
                'title' => __('Alérgenos'),
            )
        ,'preparacion' => array(
                'title' => __('Preparación')
            )
        );

    foreach ($bautabs as $bau_meta_key => $bauTab) {
    $tabContent = get_post_meta( get_the_ID(), $bau_meta_key, true );
    if ($tabContent && "" != $tabContent && null != $tabContent) {
        $tabs[$bau_meta_key] = array(
          'title' => $bauTab['title'],
          'priority' => (isset($bauTab['priority']))?$bauTab['priority']:21,
          'tabContent' => $tabContent,
          'callback' => function ($tabName,$tab)
          {
            echo wpautop($tab['tabContent']);
          },
        );   
     }   
    }
    return $tabs;
}