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Firm Tofu

Image: Open Food Facts (CC BY-SA 3.0)

Common questions

Is Firm Tofu healthy?

Firm Tofu scores 65/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. Firm tofu is a processed food with a relatively clean ingredient list, primarily consisting of water and soybeans.

How processed is Firm Tofu?

Firm Tofu is NOVA Group 3: Processed Foods.

Which ingredients drive Firm Tofu's score?

In Scout's ingredient-by-ingredient analysis, Glucono delta-lactone is flagged as an ingredient of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Firm Tofu

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65 Fair

Analysis updated July 2026 · How Scout scores

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At a glance

Beneficial ingredients 1
Harmful ingredients 0
Owned by Keystone Natural Holdings
Category Legumes and Their Products
Summary

Firm tofu is a processed food with a relatively clean ingredient list, primarily consisting of water and soybeans. It contains glucono delta-lactone, a synthetic additive used as a coagulant, which slightly impacts its score. Despite being processed, the product does not contain harmful seed oils or artificial colors, making it a healthier option within its category.

Key ingredients 4

Water
Neutral

Water is a neutral ingredient used as a solvent and to provide moisture. It is essential for the texture and consistency of tofu. No significant health impacts are associated with water in this context.

See more about Water →
Soybeans
Neutral

Soybeans are the primary ingredient in tofu, providing protein and essential amino acids. They are minimally processed in this form, retaining most of their nutritional value. However, some individuals may have allergies or sensitivities to soy.

Risks

Soy can be an allergen for some individuals and may interfere with thyroid function in large amounts.

Benefits

Rich in plant-based protein and contains essential amino acids, making it a valuable protein source for vegetarians and vegans.

See more about Soybeans →
Calcium sulfate
Neutral

Calcium sulfate is used as a coagulant in tofu production, helping to solidify the soy milk into curds. It is a common and safe additive in food processing. It also contributes to the calcium content of the tofu.

Benefits

Contributes to the calcium content of tofu, which is beneficial for bone health.

See more about Calcium sulfate →
Glucono delta-lactone
Bad

Glucono delta-lactone is an acidulant and coagulant used in tofu to help set the curds. It is a processed additive that can affect the pH and texture of the product. While generally recognized as safe, it is still a synthetic additive.

Risks

May cause digestive discomfort in sensitive individuals when consumed in large amounts.

Processing

Group 3 · Processed

Processed Foods

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