Salt Grilled Ayu Sweetfish (Japanese Style) | Arteflame

Introduction

Imagine sitting by a pristine river as the late afternoon sun warms your back—that is the essence of eating Ayu, or Sweetfish. Known for its unique, melon-like aroma, this fish is the herald of Japanese summer. When grilled on the Arteflame, the skin transforms into a salty, golden crisp that shatters upon the first bite, revealing flesh so fluffy and sweet it feels like a delicacy reserved for royalty. It is a sensory transport to a rustic riverside feast.

The Art of Simplicity

What I adore about this recipe is how it turns a simple ingredient into a piece of art. The "swimming" presentation looks incredibly impressive for guests, yet the seasoning is nothing more than pure salt. Cooking this on the plancha-style surface of the grill ensures you get that essential char without the risk of the delicate fish falling apart, striking the perfect balance between smoky texture and tender meat.

Kitchen Wisdom for Perfect Ayu

• Moisture is the Enemy: Always pat the fish completely dry before salting; this guarantees the skin crisps up rather than steams.
• Protect the Fins: Do not be shy with the "cosmetic salt" (kesho-jio) on the tail and fins. This thick crust prevents burning and keeps the fish looking beautiful.
• Heat Management: Ensure your grill is preheated thoroughly. A hot surface is critical to prevent sticking and to achieve that signature golden skin immediately upon contact.

Substitutions

If you cannot find fresh Ayu near you, small rainbow trout or smelt make excellent alternatives. They share a similar size and texture, allowing you to practice the skewering technique and enjoy that delicious salt-grilled finish.

Ingredients

Main Components

• 4 to 6 whole Ayu (Sweetfish), fresh or defrosted
• Sea salt or Kosher salt (generous amount required for both seasoning and "cosmetic" salting)
• Sake (optional, for rinsing the fish)
• Bamboo skewers (approx. 10-12 inches long)
• Vegetable oil (for greasing the grill grate)

Instructions

Step 1: Prepare the Sweetfish

1. Rinse the Ayu gently under cold water. If you prefer, wash them with a little sake to remove any fishy odor, though fresh Ayu smells pleasant.
2. Gently scrape off any slime from the skin using the back of a knife, being careful not to tear the delicate skin.
3. Pat the fish very dry with paper towels. This step is crucial for achieving crispy skin; moisture is the enemy of a good sear.

Step 2: The Skewering Technique (Uneri-gushi)

1. Thread the bamboo skewer through the fish to create a wave-like shape, making it look like it is swimming.
2. Insert the skewer near the eye, weave it through the body, and bring it out near the tail.
3. Sprinkle salt generously over the entire body of the fish from high up (about 12 inches) to ensure even distribution.

Step 3: Cosmetic Salting (Kesho-jio)

1. Dip the fins and the tail into a small bowl of salt or pack salt heavily onto them by hand.
2. This technique, known as Kesho-jio, prevents the thin fins from burning and turning to ash on the grill, keeping them beautiful and white for presentation.

Step 4: Grilling on the Arteflame

1. Fire up your Arteflame grill. You want a medium-high heat.
2. If you have a grill grate attachment, this is ideal. If cooking directly on the flat cooktop, lightly oil the surface.
3. Place the skewers on the grill. If using the flat top, you can lean the skewers against the center opening to simulate the traditional angled fire pit cooking, or lay them flat.
4. Grill for about 5-7 minutes per side. The skin should be golden and bubbling, and the eye should turn white.
5. Once the skin is crisp and the fins are stiff with salt, carefully remove the skewers (or serve with them in) and plate immediately.

Tips

The secret to restaurant-quality Ayu lies in the salt application. Do not be afraid of using too much salt on the fins; this thick crust acts as a heat shield. If the fins burn off, the fish loses its signature "swimming" aesthetic. When eating, you can knock the excess salt off the fins, but the salt on the skin is meant to be consumed to contrast with the sweet meat.

For the best texture, ensure your Arteflame is fully heated before placing the fish down. If the steel isn't hot enough, the delicate skin might stick. If you are unable to find fresh Ayu, frozen Ayu is often available at high-end Japanese grocery stores and is of surprisingly high quality. Thaw it slowly in the refrigerator overnight for the best results. Additionally, many connoisseurs eat the entire fish, including the head and bones, if the Ayu is small and grilled until very crisp.

Variations

While salt-grilling (Shioyaki) is the most traditional method, the mild flavor of Ayu serves as a canvas for other subtle Japanese flavors. You can adapt this recipe to suit your palate while keeping the core technique the same. Here are a few ways to mix it up:

• Ayu Dengaku: Instead of just salt, brush the fish with a sweet Miso glaze halfway through grilling for a caramelized, savory finish.
• Tade-su Dip: Serve the grilled fish with a classic dipping sauce made from vinegar and water pepper (Tade), which cuts through the fat.
• Sansho Pepper: Sprinkle Japanese Sansho pepper powder over the finished fish for a citrusy, numbing kick.
• Soy Glazed: Baste lightly with a mix of soy sauce and mirin in the final minute of cooking for a teriyaki-style finish.
• Butter Grilled: For a western twist, finish the fish on the flat cooktop with a knob of butter and lemon juice.

Best pairings

Ayu is a summer delicacy, so it pairs best with beverages and sides that offer refreshment and balance to the salty, charcoal-grilled flavors. The quintessential pairing is a cold, crisp Sake—specifically a Junmai or Ginjo that isn't too sweet, as it complements the melon aroma of the fish without overpowering it. Alternatively, an ice-cold Japanese lager provides a refreshing palate cleanser between bites.

For side dishes, keep it simple to let the fish shine. A bowl of steamed rice is mandatory. To add some acidity, serve Sunomono (cucumber salad with vinegar) or pickled ginger. A simple chilled tofu dish (Hiyayakko) topped with green onions and ginger also works beautifully, mirroring the delicate texture of the fish. If you are grilling other items on the Arteflame, grilled vegetables like shishito peppers or asparagus make excellent companions.

Conclusion

Mastering Japanese Grilled Ayu on the Arteflame is more than just cooking a meal; it is an immersion into a rich cultural tradition that honors the ingredients. The combination of the salty, crisp skin and the sweet, aromatic flesh creates a flavor profile that is unlike any other fish. The Arteflame’s versatility allows you to replicate the traditional hearth-style grilling method, ensuring the fish remains juicy while achieving that desirable char.

Whether you are a seasoned chef or a backyard grilling enthusiast, this recipe invites you to slow down and appreciate the process. From the careful skewering to the precise salting, every step builds anticipation. Serve this to friends and family as a centerpiece dish, and enjoy the taste of a Japanese summer right in your own outdoor kitchen.