Cookbook change image size on Print Page

hooks.php

<?php // Do not include this opening line in your functions.php

/**
 * Remove the standard Cookbook image
 */
remove_action( 'cookbook_recipe_print_top', 'cookbook_template_image', 5 );

/**
 * Add the image size you'd like used.
 * See https://developer.wordpress.org/reference/functions/add_image_size/ for
 * more information.
 */
add_image_size( 'themeprefix-cookbook-print-image-size', 150, 0, true );

/**
 * Display the recipe's updated print image.
 *
 * @param  Cookbook_Recipe $recipe The current cookbook recipe object.
 * @return void
 */
function themeprefix_template_image( $recipe ) {

	if ( $recipe->has_image() ) {
		echo '<div ' . cookbook_get_attr( $recipe, 'image' ) . '>' . $recipe->image( 'themeprefix-cookbook-print-image-size' ) . '</div>';
	}
}

/**
 * Add the updated image to the print page.
 */
add_action( 'cookbook_recipe_print_top', 'themeprefix_template_image', 5 );