Tteokbokki Tteok Extrusion — Rice Cake Forming Technique (떡볶이떡 압출)

Tteokbokki in its current spicy street food form dates to 1953 Seoul; the tteok shape itself (cylindrical garae-tteok) is much older, used in traditional mandu-guk and tteokguk at New Year

Tteokbokki tteok (떡볶이떡) — the cylindrical white rice cakes essential to Korea's most popular street dish — are made through a specific extrusion process that transforms cooked glutinous rice into dense, uniformly chewy tubes. The process begins with soaking short-grain rice, grinding to a fine flour, steaming to cook the starch, and then kneading the hot mass intensively to develop the characteristic sticky, cohesive texture. The dough is then pressed through a metal extruder (압출기) or hand-rolled into cylinders. The geometry matters: diameter affects how the tteok absorbs sauce during cooking — thinner tteok absorbs more and becomes softer; the standard diameter of 2.5 cm creates the balance of chewy interior and sauce-soaked exterior that defines the best tteokbokki.

• Chinese nian gao (glutinous rice cake) is made from a similar rice type; Japanese mochi-making (pounded, not extruded) produces a related chewy starch structure through different mechanical action

In tteokbokki, the tteok is the canvas — the gochujang-anchovy-broth sauce soaks into its surface while the interior stays firm and chewy. The interplay of sauce-soaked exterior against the pure rice interior is the defining eating experience.