Pesto with roasted potatoes and sirloin steak. Vegan variations of pesto can include mixes of fresh basil, nuts such as walnut or pine nut, olive oil, and the addition of miso paste and nutritional yeast to provide additional flavor enhancement to the dish. For reasons of expense or availability, walnuts, pecans, cashews or even peanuts are sometimes substituted for the traditional pine nuts. Also, while the nuts are traditionally used as is, some recipes call for prior toasting. While not preferable, other culinary nuts may be used due to the taste disturbances that some people may experience after consuming pine nuts
Tomato sauce purée or fresh tomatoes, roux, garlic, salt, sugar, and pepper. Many times, butter and flour will be listed in the ingredients, but those are only used to make the roux (thickening agent). The most common use of the term tomato sauce in New Zealand and South Africa is to describe a popular, commercially produced condiment that is a type of table sauce, similar to American ketchup but without vinegar, which is typically applied to foods such as meat pies, sausages, other cooked meat (in particular steak), and fish and chips. Tomato-based sauces served with pasta would commonly be referred to