The WooCommerce Shoppable Recipes feature allows you to turn recipe ingredients into purchasable items directly from your recipe card. Once enabled, each linked ingredient will display an “Add to Cart” button, making it easier for your readers to buy what they need.
Note: This feature is available only in the Professional and Business plans of the Recipe Card Blocks plugin.
Before linking ingredients to products:
See also:
WooCommerce: Adding a Simple Product →
WooCommerce: Adding an External/Affiliate Product →
What Is WooCommerce? Understanding the Basics →

Once linked, the ingredient will show an Add to Cart button on the published recipe card.
See also:
How to Create Recipes with Schema.org Markup
Additional options are available in Recipe Cards → Settings → WooCommerce
Here, you can:
After linking your products, publish or update your recipe. The Add to Cart buttons will appear automatically for each linked ingredient.