cpt-fe-recipe.php

<?php
/**
 * The code to register a WordPress Custom Post Type (CPT) `fe_recipe`
 * with a custom Taxonomy `fe_recipe_tag`
 * @package fe_recipe
 */

add_action( 'init', 'fe_recipe_cpt' );

/**
 * Register a public CPT and Taxonomy
 */
function fe_recipe_cpt() {

	// Post type should be prefixed, singular, and no more than 20 characters.
	register_post_type( 'fe_recipe', array(
		// Label should be plural and L10n ready.
		'label'       => __( 'Recipes', 'fe_recipe' ),
		'public'      => true,
		'has_archive' => true,
		'rewrite'     => array(
			// Slug should be plural and L10n ready.
			'slug'        => _x( 'recipes', 'CPT permalink slug', 'fe_recipe' ),
			'with_front'  => false,
		),
		
		// Add support for the new block based editor (Gutenberg) by exposing this CPT via the REST API.
		'show_in_rest' => true,

		/**
		 * 'title', 'editor', 'thumbnail' 'author', 'excerpt','custom-fields',
		 * 'page-attributes' (menu order),'revisions' (will store revisions),
		 * 'trackbacks', 'comments', 'post-formats',
		 */
		'supports'    => array( 'title', 'editor', 'custom-fields' ),

		// Url to icon or choose from built-in https://developer.wordpress.org/resource/dashicons/.
		'menu_icon'   => 'dashicons-feedback',
	) );

	register_taxonomy(
		'fe_recipe_tag',
		'fe_recipe',
		array(
			// Label should be plural and L10n ready.
			'label'             => __( 'Recipe Tags', 'fe_recipe' ),
			'show_admin_column' => true,
			'rewrite'           => array(
				// Slug should be singular and L10n ready..
				'slug' => _x( 'recipe-tag', 'Custom Taxonomy slug', 'fe_recipe' ),
			),
		)
	);

}