Hiyayakko is a refreshing and simple Japanese dish perfect for hot summer days. This cold tofu dish is light, nutritious, and incredibly easy to prepare, making it an ideal appetizer or side dish. The combination of silky tofu with savory toppings creates a delightful contrast in textures and flavors.
If you are not familiar with Japanese cuisine, some ingredients in this recipe might be new to you. Silken tofu is softer and more delicate than regular tofu, often found in the refrigerated section of Asian supermarkets. Bonito flakes are dried, fermented, and smoked skipjack tuna flakes, adding a unique umami flavor. These can be found in the Japanese or Asian food aisle.

Ingredients for Hiyayakko (Japanese Cold Tofu)
Silken tofu: A soft and delicate type of tofu that is perfect for cold dishes.
Soy sauce: A salty and savory sauce made from fermented soybeans, essential in Japanese cuisine.
Grated ginger: Fresh ginger root that has been finely grated to add a spicy and aromatic kick.
Green onions: Also known as scallions, these add a fresh and mild onion flavor.
Bonito flakes: Dried, fermented, and smoked skipjack tuna flakes that add a unique umami flavor.
Technique Tip for Making Hiyayakko
When preparing silken tofu, handle it gently to avoid breaking its delicate texture. Use a sharp knife to cut the tofu into cubes, and consider using a paper towel to pat the tofu dry before placing it on the plate. This will help the soy sauce and other toppings adhere better, enhancing the overall flavor and presentation of your hiyayakko.
Suggested Side Dishes
Alternative Ingredients
chilled silken tofu - Substitute with chilled soft tofu: Soft tofu has a similar texture and can be used as a direct replacement for silken tofu in cold dishes.
soy sauce - Substitute with tamari: Tamari is a gluten-free alternative to soy sauce and has a similar umami flavor.
grated ginger - Substitute with grated daikon radish: Grated daikon radish provides a similar fresh and slightly spicy flavor profile.
chopped green onions - Substitute with chopped chives: Chives offer a similar mild onion flavor and can be used as a garnish.
bonito flakes - Substitute with nori seaweed flakes: Nori seaweed flakes provide a similar umami flavor and are a good vegetarian alternative.
Other Alternative Recipes Similar to This Cold Tofu Dish
How To Store / Freeze This Cold Tofu Dish
- To keep your hiyayakko fresh, store the chilled silken tofu in an airtight container in the refrigerator. Ensure the container is sealed tightly to prevent any unwanted odors from seeping in.
- If you have leftover soy sauce, grated ginger, chopped green onions, or bonito flakes, store them separately in small containers. This will help maintain their individual flavors and textures.
- For the best taste and texture, consume the hiyayakko within 1-2 days. The tofu may start to release water over time, which can affect its texture.
- Avoid freezing silken tofu as it can alter its delicate texture, making it less enjoyable when thawed. Freezing can cause the tofu to become grainy and lose its smooth consistency.
- If you must freeze, consider using a firmer type of tofu instead of silken tofu. Drain and press the tofu to remove excess water before freezing. Wrap it tightly in plastic wrap and place it in a freezer-safe bag.
- When ready to use frozen tofu, thaw it in the refrigerator overnight. Once thawed, press it again to remove any excess water before using it in your hiyayakko or other dishes.
- Always check the tofu for any signs of spoilage before consuming. If it has an off smell, slimy texture, or unusual color, discard it immediately.
How To Reheat Leftovers
- If you must reheat hiyayakko, consider using a gentle method to preserve the delicate texture of the silken tofu.
- Place the tofu cubes in a microwave-safe dish and cover with a damp paper towel. Microwave on low power for 30-second intervals until just warmed through. Be cautious not to overheat, as the tofu can become watery.
- Alternatively, you can steam the tofu. Place the tofu cubes in a heatproof dish and set it in a steamer basket over simmering water. Steam for 2-3 minutes until warmed.
- Avoid reheating the toppings like bonito flakes, green onions, and grated ginger. Instead, reapply fresh toppings after reheating the tofu to maintain their vibrant flavors and textures.
- Drizzle fresh soy sauce over the reheated tofu to enhance the flavor.
Best Tools for Preparing Hiyayakko
Knife: To cut the chilled tofu into cubes.
Cutting board: To provide a stable surface for cutting the tofu.
Plate: To place the tofu cubes on for serving.
Grater: To grate the ginger.
Measuring spoons: To measure the soy sauce, grated ginger, and chopped green onions.
Small bowl: To hold the grated ginger and chopped green onions before adding them to the tofu.
Chopping knife: To chop the green onions finely.
Serving spoon: To drizzle the soy sauce over the tofu and to add the toppings.
How to Save Time on Making Hiyayakko
Prepare ingredients in advance: Chop green onions and grate ginger ahead of time to streamline assembly.
Use pre-chilled tofu: Ensure your silken tofu is already chilled to save cooling time.
Organize toppings: Have soy sauce, bonito flakes, and other toppings ready to go for quick assembly.
Cut tofu efficiently: Use a sharp knife to quickly and cleanly cut the tofu into cubes.
Serve immediately: Assemble and serve the dish right away to maintain the fresh, cold texture of the tofu.

Hiyayakko (Japanese Cold Tofu) Recipe
Ingredients
Main Ingredients
- 1 block Silken Tofu chilled
- 1 tablespoon Soy Sauce
- 1 teaspoon Grated Ginger
- 1 tablespoon Chopped Green Onions
- 1 tablespoon Bonito Flakes
Instructions
- 1. Cut the chilled tofu into cubes.
- 2. Place the tofu cubes on a plate.
- 3. Drizzle soy sauce over the tofu.
- 4. Top with grated ginger, chopped green onions, and bonito flakes.
- 5. Serve immediately.
Nutritional Value
Keywords
Suggested Main Courses and Desserts for This Cold Tofu Dish
More Amazing Recipes to Try 🙂
- Japanese Fish Recipe35 Minutes
- Japanese BBQ Wing Recipe45 Minutes
- Japanese Baked Chicken Recipe45 Minutes
- Japanese Plum Wine Recipe30 Minutes
- Japanese Red Pepper Recipe25 Minutes
- Japanese Chicken Tender Recipe35 Minutes
- Japanese Raw Egg Rice (Tamago Kake Gohan) Recipe5 Minutes
- Japanese Smoothie Recipe10 Minutes
Leave a Reply