What is the "Chili sauce" ingredient in this recipe?
Heinz and some other companies sell a product that they call 'chili sauce', which might be what you're looking for.

It's a tomato-based sauce, with some spices and seasoning, but it's not particularly spicy.

If you have access to Dutch &amp; German ingredients, you might replace it with one of the thicker shashlik sauces (aka 'curry ketchup').  If you have access to UK ingredients, you might try brown sauce.

If you wanted to make it yourself from scratch, see http://www.food.com/recipe/heinz-chili-sauce-copycat-457947