input--search.html.twig

{#
/**
 * @file
 * Theme override for an 'input' #type form element.
 *
 * Available variables:
 * - attributes: A list of HTML attributes for the input element.
 * - children: Optional additional rendered elements.
 *
 * @see template_preprocess_input()
 */
#}

{%
  set placeholder_text = 'Search by keyword, ingredient, dish'
%}

<input{{ attributes.setAttribute('placeholder', placeholder_text) }} />{{ children }}