Tomato Paste Vs Tomato Sauce: What's The Difference?

What is tomato paste?

Tomato paste is highly concentrated tomato cooked down to remove most of the water, producing a thick, deep red paste with intense tomato flavor. Production involves cooking pureed tomatoes for 1-3 hours until reduced to about a quarter of the original volume. The result is roughly 28-30 percent solids (versus tomatoes' usual 5-6 percent solids), giving paste its intense flavor and deep red color. Tomato paste is used in small amounts (typically 1-3 tablespoons per recipe) to deepen and concentrate tomato flavor in soups, stews, chili, sauces, and braises. The standard packaging is small 6 oz cans or 4.5 oz tubes. Toasting (cooking the paste in oil for 1-2 minutes before adding liquid) intensifies flavor further. Tomato paste contains no added seasonings; just tomatoes and sometimes salt.

What is tomato sauce?

Tomato sauce is a thinner tomato product made from cooked, strained, and seasoned tomatoes. The standard composition is much higher water content (about 8-12 percent solids), with added seasonings like onion powder, garlic powder, dried herbs, salt, sugar, and sometimes acid (citric acid or lemon juice) for preservation. Commercial tomato sauce has a smooth, pourable consistency that's much thinner than tomato paste but thicker than tomato juice. Common applications: pasta sauce (often seasoned further), pizza sauce base, soup base, casserole binding ingredient, and various Mexican and Italian dish foundations. Standard packaging is 8-15 oz cans. Tomato sauce is the standard 'red sauce' base in American cooking, with various brands competing on seasoning balance and tomato quality.

How do tomato paste and tomato sauce compare?

Concentration differs dramatically: paste is 28-30 percent solids; sauce is 8-12 percent solids. Texture differs: paste is thick and spreadable; sauce is pourable and thin. Use quantity differs: paste is used by the tablespoon; sauce is used by the cup. Seasoning differs: paste is unseasoned; sauce typically has added herbs, salt, and other flavors. Color differs: paste is deep red-orange; sauce is medium red. Calorie content per ounce differs: paste has more calories per ounce due to concentration. Cooking applications differ: paste deepens flavor; sauce provides body and base. Storage differs after opening: paste lasts 5-7 days refrigerated; sauce lasts 5-7 days. Both can be frozen. Substitution requires major adjustments.

Can you substitute one for the other?

Yes, with significant adjustments. To substitute tomato sauce for tomato paste: use about 3 tablespoons of tomato sauce per tablespoon of tomato paste called for, and reduce other liquid in the recipe by 2 tablespoons per tablespoon of paste. The flavor concentration will be less intense; consider reducing the sauce by simmering before adding to recipes that need deep tomato flavor. To substitute tomato paste for tomato sauce: dilute 1 tablespoon of paste with 3 tablespoons of water to approximate 1/4 cup of sauce; add seasonings (garlic powder, oregano, salt, sugar) to match tomato sauce's flavor profile. For tomato paste alternatives in a pinch, reduced tomato sauce or strained tomatoes work; for tomato sauce alternatives, diluted paste with seasonings works.