Use 3 tablespoons tomato sauce for each tablespoon of tomato paste, simmering it a few minutes to thicken. Tomato puree works at 2 tablespoons per tablespoon of paste.
Ratios from university extension services and King Arthur Baking. Checked .
Tomato paste substitutes, best first
- For 1 Tbsp tomato paste3 Tbsp tomato sauce, simmered to thickenBest for: sauces, soups, stews
Red Gold; consistent with Colorado State's 3/4 cup paste + 1 cup water = 2 cups sauce. Reduce other liquid if not simmering.
- For 1 Tbsp tomato paste2 Tbsp tomato pureeBest for: sauces, chili
Red Gold.
- For 1 Tbsp tomato paste3 Tbsp passata (strained tomatoes)Best for: sauces
Red Gold.
- For 1 Tbsp tomato paste1/4 cup canned crushed tomatoes, simmered downBest for: stews, braises
Red Gold.
- For 1 Tbsp tomato paste1 Tbsp ketchup; cut recipe sugarBest for: chili, meatloaf, glazes
Red Gold; ketchup adds sugar and vinegar.
Why the swaps work
Tomato paste is tomatoes cooked down to remove most of their water, concentrating flavor; thinner tomato products need more volume or reduction to match.
Questions people ask
Can I use ketchup instead of tomato paste?
Yes, about 1:1, but reduce sugar since ketchup is sweet and tangy.
How do I make tomato sauce from paste?
Mix 3/4 cup paste with 1 cup water for about 2 cups sauce (Colorado State).