Non-Food Recipes
By default WP Recipe Maker adds recipe metadata to all of its recipes. According to Google’s guidelines this is only allowed for food recipes, however. If you want to use the plugin for DIY or other non-food recipes you need to make sure that metadata is not there by selecting "Other (no metadata)" as the recipe type when editing a recipe:
For a non-food recipe we will not output the JSON-LD metadata, making sure you’re in line with Google’s guidelines.