Nasoya Organic Super-Firm Tofu (Cubed): Nutrition & Labelgrade B+ (83/100)

The short answer

Nasoya Organic Super-Firm Tofu delivers 9g of protein for 90 calories per 3 oz (85g) serving — a clean, low-calorie plant protein with near-zero sodium (5.1mg), no cholesterol, 120mg of calcium, and a four-word organic ingredient list. It earns a B+ (83/100): perfect-tier marks on saturated fat, sodium, and sugar, held back almost entirely by a protein density that’s modest next to meat — and, as it turns out, next to some other tofu.

What “super-firm” actually buys you here

The tofu firmness ladder — silken, soft, firm, extra-firm, super-firm — is really a water ladder. Firmer tofu has been pressed harder, so less of its weight is water, and since water carries no calories and no protein, squeezing it out should concentrate everything that matters. That’s the theory behind buying super-firm for protein.

The real payoff on this block isn’t the protein number, though — it’s the format. Two things you actually get:

• No pressing required. The factory already drove off the water. With standard firm tofu you’re supposed to wrap it in towels under a weighted plate for 20–30 minutes before it’ll brown; here you pat the pre-cut cubes dry and cook.
• It holds its shape. Dense and pre-cubed, it won’t slump or crumble when you pan-fry, bake, or air-fry. This is the tofu format for stir-fries, sheet-pan dinners, and meal-prep bowls where you want intact, crisp-edged pieces instead of scramble.

A label surprise worth knowing

Here’s the honest catch that the front-of-pack “super-firm” doesn’t tell you: at 10.6g of protein per 100g, this block is actually lower in protein density than the standard firm organic tofu in our comparison set. House Foods Organic Tofu — labeled plain “firm,” not super-firm — lists 14g per 85g, or 16.5g per 100g (USDA FDC 1851491). Same 3 oz serving, roughly 5 more grams of protein.

That isn’t a knock on the firmness rule; it’s a reminder that tofu labels aren’t standardized between brands, so a competitor’s “firm” can out-protein another’s “super-firm.” If grams-per-serving is your only goal, House Foods wins this particular matchup. What Nasoya trades for that is the cube-and-skip-the-press convenience and a slightly lighter macro line — 90 calories and 4.5g fat versus House Foods’ 120 calories and 7g fat per serving.

Why the B+

Tofu is, at heart, isolated soy curd — soy milk coagulated into solids with the whey drained off. That process strips it to a remarkably clean profile, and the Labelgrade reflects it.

The A+ on sodium is the standout: 5.1mg per serving is effectively nothing, and it’s why this tofu is one of the few savory proteins you can build a whole salt-controlled meal around without spending any of your sodium budget. The fiber “F” is structural — straining the curd leaves most of the soybean’s fiber behind in the discarded whey and okara, so 1.02g is all that survives. And the C+ on protein density is a per-100g judgment, not a verdict on the food: at 90 calories for 9g, the calorie cost of that protein is low even if the absolute count is.

Organic, and what that buys you

The “organic” on the label means the soybeans were grown without synthetic pesticides and, by USDA organic rules, are not genetically modified — a real consideration for soy, since most conventional U.S. soybeans are GMO. The two coagulants doing the work, magnesium chloride (nigari) and calcium sulfate, are traditional setting agents used for centuries, not industrial additives; the calcium sulfate is also why a serving carries 120mg of calcium. There are no preservatives, gums, or flavorings on the panel — just water, organic soybeans, and those two salts.

Tofu vs. tempeh

If you’re choosing between this and the Lightlife tempeh in our comparison set, the dividing line is fermentation. Tempeh is whole soybeans fermented and pressed into a firm cake, so it keeps the bean’s fiber and packs more protein per ounce — 16g protein and 6g fiber per serving versus this tofu’s 9g and 1g — with a nutty, almost mushroomy bite. The cost is calories: tempeh runs 170 per serving to this tofu’s 90. This tofu is smoother, more neutral, and far more absorbent, taking on whatever marinade you give it. Neither is “better”: tofu wins on versatility and a lighter, blanker plate; tempeh wins on fiber, protein, and texture.

Who it’s for

A lean, no-fuss plant protein for vegans, vegetarians, and anyone meal-prepping who values the cube-and-cook convenience: 9g of complete protein for 90 calories, almost no sodium, pre-pressed and pre-cubed so it goes straight into the pan. The shoppers who should look elsewhere are those chasing maximum grams per serving — a firmer or denser tofu like House Foods, or whole-bean tempeh, will out-protein it — and anyone who needs fiber from their protein, since straining the curd is exactly what strips it out.

Ingredients

Water, organic soybeans, less than 2% of magnesium chloride, calcium sulfate. (Verbatim from the USDA Branded Foods entry, FDC 2400443. Magnesium chloride [nigari] and calcium sulfate are the coagulants that set the soy milk into curd; the calcium sulfate also supplies the 120mg of calcium per serving.)

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Scope: This page applies specifically to Organic Tofu Cubed Super Firm (8 oz/227 g) · UPC 025484000292. Other sizes, flavors, or formulations may differ.