Question: How does one search for recipes that contain a specific ingredient, in this case "tomato sauce", using Google Recipes? 

I do not want to specify the recipe name, just the ingredients.

```
https://encrypted.google.com/search?hl=en&prmdo=1&tbs=rcp%3A1%2Crcp_ing0%3Atomatoe+sauce&q=*&btnG=Search&aq=f&aqi=&aql=&oq=

```

The above URL specifies the desired ingredient, "tomato sauce". 

How does one indicate the wildcard nature for the search box?

Answer: 
Try a plain Google search with terms *recipes using tomato sauce*. After the initial results are returned, you can click the "Recipes" button on the left to be more selective.

Added via edit:

As per the discussion in the comments below, you can get pretty much the non-tomato-sauce recipe results wanted by using [this "tomato sauce" without tomatoes search](http://www.google.com/search?hl=en&tbs=rcp%3A1%2Crcp_ing0%3A-tomatoes&q=%22tomato+sauce%22).
You can try searching from the [Recipe View's starting page](http://www.google.com/landing/recipes/). 

This is how the URL looks after I submitted the keyword "tomato sauce" from the starting page - <http://www.google.com/search?q=tomato+sauce&tbs=rcp%3A1> 

It shows a relatively bigger list of ingredients this way.