Recipe
You're Washing Blood Clams Wrong! Chef's Guide to Aroma, Texture & Innards
Ingredients
- Bloodclams (as needed)
- Naturalsalt, to taste (for removing slime)
About "How to Prep Blood Clams (Removing Slime & Handling Innards)"
In this video, a master chef with 50 years of experience in Japanese cuisine shares professional techniques for prepping blood clams. While many people salt-rub the clams after opening them, the chef warns that this ruins their freshness and flavor. Instead, he recommends rubbing the outside with salt while the clam is still whole and unopened. The video covers everything from checking freshness and shucking with a specialized tool to prepping the mantle (himo) and utilizing the innards. He explains that fresh spring innards are sweet and bitterness-free, making them a delicious addition to dishes rather than waste. Finally, he shares a fun trivia about how blood clam shells are used for sound effects in Kabuki theater.
Tips for Making "How to Prep Blood Clams (Removing Slime & Handling Innards)"
-
Checking Freshness
- Pick up each blood clam and shake it; choose those that do not make a hollow rattling sound (indicating the meat is tight and heavy). Healthy clams will stop making sound as you shake them.
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Initial Prep
- Always scrub the shell surface sparkling clean under running water with a scrubbing brush before shucking. This is a fundamental step to prevent dirt and bacteria from mixing with the body fluid.
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Shucking Method
- Use a specialized blood clam shucking tool (with a rounded end), insert it vertically into the hinge, and twist clockwise to open the shell cleanly without damaging the meat or mantle. Smashing the shell can damage the meat and accelerate spoilage.
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Mantle Prep
- Remove the mantle quickly without making unnecessary knife cuts. Since a crunchy texture is key, finishing the prep rapidly and chilling it in the refrigerator immediately is crucial to preserving its texture.
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Desliming (Crucial)
- Never salt-rub after opening. Rub the outside of each clam with salt while they are still whole and unopened. Rubbing salt into opened clams allows it to penetrate the inner flesh, quickly weakening the clam.
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Type of Salt
- Use natural salt instead of refined salt for desliming. Refined salt easily harms shellfish (e.g., clams purged in refined salt water often die the next day), whereas natural salt keeps them fresh longer.
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Handling Innards
- Do not discard the innards, especially in early spring (the cold season before spawning) when they are sweet and free of bitterness. After removing them, boil and air-cool on a sieve without rinsing in water to lock in the umami. Serve with wasabi soy sauce alongside sashimi or use in himo-kyu rolls.
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Assessing Innards
- Avoid using the innards when the clams are spawning and weakened. Discerning the quality based on the season is a true test of a professional's skill.
Ingredients for "How to Prep Blood Clams (Removing Slime & Handling Innards)"
2 items* Tap ingredient names to find on Amazon
How to Make "How to Prep Blood Clams (Removing Slime & Handling Innards)"
- 1
Pick up each blood clam and shake it; choose those that do not make a hollow rattling sound inside (indicating the meat is firm and heavy) to ensure freshness.
- 2
Before shucking, thoroughly scrub the surface of the shells under running water with a scrubbing brush until they are sparkling clean.
- 3
While the blood clams are still whole and unopened, rub the outside of each one with natural salt to remove the slime (do not open them yet).
- 4
Insert a specialized shucking tool vertically into the hinge (where the shell opens), twist it clockwise to pop the shell open, and catch the red body fluid in a bowl.
- 5
Gently scrape the meat along the shell to remove it, taking care not to damage the mantle (himo) or the main body.
- 6
Quickly separate the mantle (avoiding unnecessary knife cuts and working as fast as possible). Once prepped, immediately place it in the refrigerator to chill.
- 7
(If using the innards) For flavorful innards harvested in early spring, remove and boil them, then drain on a sieve to air-cool without rinsing in water. Enjoy with wasabi soy sauce or in a himo-kyu (mantle and cucumber) roll.
Detailed Commentary on "How to Prep Blood Clams (Removing Slime & Handling Innards)"
* Content organized by topics from the video.
The Chef's Philosophy on Prepping Blood Clams
A master chef with 50 years of experience in Japanese cuisine explains how to prep blood clams, a popular sushi topping. While it is common to salt-rub the clams after opening them to remove slime, the chef warns that this ruins their best qualities. Rubbing salt into the cut surfaces allows the salt to penetrate the meat, degrading its freshness, aroma, and flavor. The chef's method differs significantly from standard prep work; he uses a highly logical washing technique designed to serve the clams at their peak freshness and aroma right before they reach the customer. In this guide, we will explore professional techniques to bring out the full potential of blood clams, from selecting the best ones and removing slime to handling the often-discarded innards (liver).
Selecting Fresh Blood Clams and Initial Prep
The first step in prepping blood clams is selecting fresh ones and performing careful initial prep. The chef shakes each clam to check if the round meat inside is loose and hitting the shell. Weak clams will make a hollow rattling sound when shaken, whereas healthy, active clams will tighten up as you shake them, silencing any sound. The secret to selection is choosing heavy clams that make no sound. Before shucking, it is essential to thoroughly scrub the shells under running water with a scrubbing brush. The red body fluid released during shucking is saved to keep the meat plump and fresh. Since the outside of the shell can carry unknown contaminants, scrubbing the shells sparkling clean beforehand is fundamental to prevent dirt and bacteria from mixing with this fluid.
Shucking Cleanly with a Specialized Tool
For shucking, the chef uses a traditional, specialized tool designed specifically for blood clams. While some smash the shells open, this carries a high risk of damaging the delicate mantle inside. Any damage causes the meat to spoil faster and lose its vitality while stored in the refrigerator. The specialized tool, which has a rounded end, is inserted vertically into the hinge where the shell opens. With a simple clockwise twist, the shell pops open cleanly. By gently scraping along the shell, you can extract the meat and mantle completely undamaged. Using this tool—which is readily available at kitchenware stores—minimizes stress on the clam and preserves its freshness, showcasing the chef's meticulous attention to detail.
Prepping the Mantle Quickly and Cleanly
After shucking, the next step is prepping the mantle (himo). The chef demonstrates his unique method, which differs from what standard sushi chefs do. The greatest advantage of his technique is that it requires minimal cleaning and avoids unnecessary knife cuts, allowing the work to be completed incredibly fast. A crunchy texture is the life of the mantle, so finishing the prep quickly and chilling it in the refrigerator as soon as possible is vital to preserving this texture. While many picture the mantle as flat, the section extending from the adductor muscle is actually rounded and tube-like. To deliver this plump, natural volume and texture to the customer, the chef has designed his workflow to complete the process in the shortest time possible.
The Secret to Desliming While Whole
This is the most crucial point of the entire process. Typically, chefs open the clams first, sprinkle them with salt, and swirl them in a strainer to remove the slime. However, our chef strongly opposes this. Rubbing salt into opened meat allows the salt to penetrate the clean inner flesh, quickly weakening the clam. Instead, his method is to rub the outside of each clam with salt one by one while they are still whole and unopened. In this round state, the surface is smooth, allowing you to clean off only the outer slime without putting unnecessary stress on the clam. Furthermore, the choice of salt matters: natural salt must be used instead of refined salt. Just as clams purged in refined salt water die the next day while those in natural salt water survive for days, the quality of the salt heavily impacts the clam's freshness.
Seasonal Delicacy: Handling the Innards
In many sushi prep videos, the blood clam's innards (liver) are discarded, but the chef insists they should not be wasted. Especially in early spring, during the cold season before the clams spawn, the liver is plump and incredibly delicious. Fresh liver from this season has absolutely no bitterness and is wonderfully sweet, making it exquisite when served alongside sashimi with wasabi soy sauce or tucked into a himo-kyu roll. During prep, after removing the innards, boil them and then "air-cool" them (draining on a sieve to cool without rinsing in water) to lock in the umami. However, you should avoid using the innards when the clams are spawning and weakened, making seasonal judgment a true test of a professional chef's skill. When harvested at the right time, these innards become a superb dish.
Kabuki Sound Effects: Blood Clam Shell Trivia
Finally, the chef shares an interesting story from his time at the ultra-exclusive traditional restaurant "Kanetanaka." The owner of Kanetanaka, who was deeply involved with Kabuki performances at the Shinbashi Enbujo Theatre, once asked him to save large blood clam shells instead of throwing them away. As it turns out, rubbing two clean, dried blood clam shells together produces a highly realistic sound that mimics a frog croaking. Just as red beans are used backstage in Kabuki to mimic the sound of waves, blood clam shells are still used today to create frog sound effects. In the video, the chef demonstrates this sound by rubbing the shells together, adding a witty traditional joke: "Male frogs croak 'Oda Nobunaga,' while female frogs croak 'How ridiculous!'" to lighten the mood.
About 大将に聞いてみた!
大将に聞いてみた!
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