block of tofu
Tofu is a complete protein containing all nine essential amino acids and is rich in iron and calcium. It is low in calories and contains isoflavones, plant-based compounds with potential health benefits.
About
Tofu is a curd-like food produced by coagulating soy milk and pressing the resulting curds into blocks. Originating in China approximately 2,000 years ago and later adopted throughout East and Southeast Asia, tofu is made through a process analogous to cheese-making: soybeans are soaked, ground, and boiled to create soy milk, which is then coagulated using nigari (magnesium chloride), gypsum (calcium sulfate), or glucono delta-lactone. The resulting curds are pressed together in molds to form blocks of varying firmness.
Tofu blocks range in texture from silken (soft, custard-like) to firm or extra-firm (crumbly, dense), with mild, slightly bean-forward flavor that readily absorbs surrounding ingredients. The coagulant used affects both texture and subtle flavor nuances, with gypsum-set tofu offering slightly sweeter notes and nigari-set tofu providing mineral characteristics.
Culinary Uses
Tofu is used across Asian cuisines in stir-fries, soups, braises, and grilled preparations. Silken varieties are typically used in soups (miso soup, mapo tofu) or blended into desserts and smoothies, while firmer blocks are cubed for stir-fries, pan-fried until golden, pressed and crumbled for texture, or grilled for charred surfaces. In Japanese cuisine, chilled agedashi tofu (lightly fried and dipped in sauce) is common; Chinese cuisine features it in spicy mapo tofu and in clay pot dishes; Korean cuisine incorporates it into banchan side dishes and stews. Preparation often involves pressing to remove excess moisture, which improves browning and sauce absorption.