Korean Rice Cakes (Tteok): Types, Soaking & Storage Guide

If you've stood in the rice cake section of a Korean grocery store wondering why there are bags of thick cylinders next to bags of thin ovals, you're not alone. The short answer: cylinder tteok is a dense, chewy shape built for simmering in rich, spicy sauces, while oval sliced tteok is a thin, quick-cooking shape designed for soups and fast stir-fries.

As for soaking, it depends entirely on whether your package is frozen, vacuum-sealed, or fresh — and getting this step right is the difference between perfectly bouncy rice cakes and hard, cracked disappointments. Let's break down exactly what separates these two tteok shapes, when to soak them, and how to cook each one like a pro.

Quick 30-Second Shelf Summary

• Cylinder tteok (tteokbokki-tteok): Thick, finger-shaped rolls — grab this for spicy rice cakes (tteokbokki) or hearty, sauce-heavy stir-fries.
• Oval sliced tteok (tteokguk-tteok): Thin, coin-shaped diagonal slices — grab this for traditional rice cake soup (tteokguk) or rapid stir-fries.
• Frozen or vacuum-sealed bag? Soak in cold water for 10–15 minutes before cooking to rehydrate and prevent cracking.
• Fresh, refrigerated bag? No soaking needed — just a quick rinse to separate the pieces.
• Cooking time: Extremely fast. Oval slices cook in 2–3 minutes; cylinders need 5–8 minutes to absorb sauce.
• Storage: Store in the refrigerator for up to 3 days after opening, or freeze for up to 3 months.

What Exactly Is Tteok?

Tteok (떡) is a Korean rice cake made from steamed short-grain rice flour. Unlike sweet dessert rice cakes, savory cooking tteok is made from non-glutinous rice (mepssal). This is a crucial distinction: because it isn't made from glutinous sticky rice, it maintains its structural integrity when heated, yielding a uniquely dense, toothsome, and bouncy bite rather than melting into a sticky puddle.

Naturally gluten-free and mild in flavor, tteok acts as a perfect culinary canvas, readily absorbing the vibrant spices, savory broths, and umami-rich sauces of Korean cuisine.

Cylinder Tteok vs. Oval Sliced Tteok: The Real Differences

Cylinder Tteok (Tteokbokki-tteok)

These are the thick, finger-sized rolls famously served at Korean street food stalls. Their dense, robust structure is intentional — it is engineered to withstand long simmering in heavy, sweet-and-spicy gochujang sauces without disintegrating. As they simmer, the starch on the exterior lightly thickens the sauce, helping it cling to each chewy cylinder. This is the definitive shape for tteokbokki.

Oval Sliced Tteok (Tteokguk-tteok)

Long cylinders of tteok are sliced diagonally into thin, coin-like ovals to create this shape. Because they are thin, they cook through in a fraction of the time and slide easily onto a spoon alongside warm broth. This shape is traditionally used for tteokguk, the savory rice cake soup eaten on Korean New Year (Seollal) to symbolize prosperity and a long, healthy life.

Do You Need to Soak Tteok Before Cooking?

This is the step that trips up most home cooks. The answer depends on how your tteok was packaged and stored, rather than its shape:

• Frozen or vacuum-sealed tteok: Yes, soak them. Submerge them in cold or room-temperature water for 10 to 15 minutes before cooking. This rehydrates the rice starch evenly, prevents the outer layer from splitting or cracking in hot liquid, and guarantees a uniform, pillowy-soft chew all the way to the core.
• Fresh, refrigerated tteok: No soaking required. These are already soft and pliable. Simply rinse them briefly under cold tap water and gently pull apart any pieces that have stuck together in the bag.

Skipping the soak on frozen tteok is a common mistake. If you toss frozen cylinders directly into hot sauce or boiling broth, the sudden temperature shock causes the dry exterior to split, dissolve, and turn gluey, while the center remains hard and icy.

Flavor Profile: A Blank, Chewy Canvas

On its own, plain culinary tteok has an incredibly subtle flavor profile, letting the sauces and broths do the heavy lifting:

• Spiciness: 0/5 — completely mild and neutral straight out of the package.
• Sweetness: Very low — just a clean, natural hint of sweetness from the short-grain rice.
• Umami: Low — it relies on broth, fish cakes, or soy sauce to build depth.
• Saltiness: Low — typically unseasoned or containing just a trace of salt for preservation.

How to Cook Each Type of Tteok

Cylinder Tteok: Spicy Rice Cakes (Tteokbokki)

Simmer soaked cylinder tteok directly in a bubbling sauce of gochujang (Korean chili paste), gochugaru (red pepper flakes), soy sauce, garlic, and sugar. Let them simmer for 5 to 8 minutes, stirring frequently so they don't stick to the bottom of the pan. As they cook, the sauce will reduce to a glossy glaze. Add Korean fish cakes (eomuk), hard-boiled eggs, and cabbage for an authentic street-food experience.

Oval Sliced Tteok: Soups and Quick Stir-Fries

For a comforting bowl of tteokguk, add soaked oval slices to a boiling, savory beef or anchovy-kelp broth. Cook for just 2 to 3 minutes — once they float to the surface, they are perfectly tender. Finish with scrambled egg ribbons (jidan), sliced scallions, a drizzle of toasted sesame oil, and shredded seaweed (gim).

Alternatively, toss soaked oval slices into a hot skillet with sesame oil, minced garlic, soy sauce, and fresh vegetables for a rapid, savory stir-fry (tteok-bap) that makes a wonderful gluten-free alternative to stir-fried noodles.

Cylinder vs. Oval Tteok At a Glance

Easy Pantry Substitutions for US Kitchens

Can't find the specific shape your recipe calls for? Cylinder and oval tteok can easily stand in for one another in a pinch — just be sure to adjust your cooking times, keeping in mind that the thinner ovals cook much faster than thick cylinders.

If you cannot find Korean tteok at all, the absolute best substitute is Chinese rice cakes (nian gao / 年糕). Like tteok, they are made from non-glutinous rice flour and offer the exact same dense, chewy texture.

Avoid using Japanese mochi or sweet dessert rice cakes as a substitute in hot liquid. Mochi is made from highly glutinous sweet rice flour, which melts quickly when heated, turning your soup or stir-fry into a sticky, gooey paste.

Storage Tips and Common Mistakes

• Unopened packages: Keep fresh packages in the refrigerator. Vacuum-sealed, shelf-stable packages can remain in your pantry until opened (check the package label to verify).
• After opening: Exposure to air dries out tteok rapidly, causing it to crack. Transfer leftover rice cakes to an airtight bag or container. Keep in the fridge and use within 3 days, or freeze them for up to 3 months.
• Overcooking: Tteok cooks quickly. Keep a close eye on your pot; once they float and turn soft to the touch, they are ready. Leaving them in boiling liquid too long will cause them to lose their bounce and dissolve into mush.
• Reheating leftovers: Once refrigerated, cooked tteok reverts to a hard, chalky texture. To restore their legendary chew, reheat them with a splash of water or broth in the microwave (covered) or toss them back into a hot, simmering pan for a minute or two.

Once you understand the shape, the soak, and the timing, tteok is one of the easiest, fastest, and most satisfying ingredients to cook with. Stop by Koa Mart to stock up on premium cylinder and oval tteok, and bring the comforting texture of authentic Korean home cooking to your table tonight.