
If you've ever ordered sushi, you may have noticed small pieces of green plastic in your meal. These plastic strips, known as sushi grass or bento grass, serve both aesthetic and functional purposes. While they add a pop of colour to sushi presentations, their main role is to separate different types of sushi and sashimi, preventing the transfer of flavours and smells. This practice originated from the use of real leaves, such as bamboo or orchid leaves, which were traditionally used to preserve the freshness and flavours of sushi.
| Characteristics | Values |
|---|---|
| Name | Mountain baran, bamboo leaves, bento grass, sushi grass, jinzo-baran, baran |
| Material | Plastic |
| Purpose | To separate different types of sushi and sashimi, to prevent flavours and smells from transferring |
| Use | Preferred for delivery and takeout sushi as it maintains its appearance over time, widely used in supermarkets to cut costs |
| Alternative | Fresh leaves such as Sasa (Broadleaf bamboo) or Haran (Aspidistra elatior), Shiso leaf |
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What You'll Learn

Plastic is used to mimic the green appearance of bamboo leaves
The green plastic in sushi is a replica of the Sasa (Broadleaf bamboo) or Haran (Aspidistra elatior). It is used to separate different types of sushi and sashimi, preventing the transfer of flavours and smells. This practice originated from the use of real leaves, which had antimicrobial properties and kept food fresh.
Plastic substitutes became popular in the mid-1960s as supermarkets were emerging in Japan, offering a cost-effective and convenient alternative to fresh leaves. The plastic variety is widely used today, especially for delivery and takeout sushi, as it maintains its colour and shape over time. It also allows for more flexibility in terms of size and cut compared to natural leaves.
While the plastic version serves a practical purpose, it cannot replicate the unique fragrance and texture of fresh bamboo leaves. The art of intricately cutting bamboo leaves is called Kumasasa, and it is an integral part of Japanese culture and sushi presentation.
The use of plastic grass in sushi, also known as "mountain baran" or "sushi grass," has drawn some criticism due to environmental concerns. However, it is important to note that the original purpose of using leaves in sushi was to preserve freshness and enhance the dining experience.
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It's called 'mountain baran' and separates flavours
The green plastic in sushi is called "mountain baran", which is a plastic version of bamboo leaves. It is used to separate different types of sushi and sashimi, preventing the transfer of flavours and smells. This ensures that the sushi remains delicious and appetising for the customer.
Traditionally, fresh leaves such as bamboo, orchid or lily leaves were used to separate foods in bento boxes and sushi platters. These leaves, known as "haran" in Japanese, were chosen not only for their ability to preserve the flavours of the ingredients but also for their aesthetic appeal, adding a pop of green to the meal.
However, in recent times, there has been a shift towards using plastic alternatives. This change emerged in the mid-1960s when supermarkets in Japan were looking for cost-cutting measures. Plastic offered a cheaper and more convenient option, as it doesn't wilt and can be produced in various sizes and cuts.
While the plastic mountain baran serves a practical purpose in separating flavours, it lacks the unique fragrance and texture of fresh leaves. Some people opt for natural alternatives like lettuce or banana leaves when concerned about flavour mixing. Additionally, the plastic variety has faced criticism for contributing to the excessive use of plastic in Japan.
It is worth noting that the plastic baran is not meant to be consumed, unlike the traditional leaves that offer health benefits when eaten. The original leaves, such as the perilla or shiso leaf, have medicinal properties and aid in digestion and detoxification, making them a valuable component of a sushi meal.
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It's a replacement for the perilla or shiso leaf
The green plastic in sushi is a replacement for the perilla or shiso leaf. This leaf is traditionally included with raw fish for more than just aesthetic purposes. It is edible and is meant to be eaten, not just used as a garnish. The perilla leaf is known as shiso in Japanese and zi su ye in Chinese. It is a herb with a slightly spicy taste and several health benefits. It is said to promote sweating, aid digestion, detoxify food poisoning from fish, and calm a restless fetus.
The plastic version is used to mimic the green appearance of the leaf and is placed in sushi for presentation. It is also used to keep the fish from coming into contact with vinegar from the pickled ginger on the plate. The plastic substitute came into use around the mid-1960s when supermarkets were gaining popularity in Japan. The use of plastic allowed stores to cut costs and offer lower prices.
The perilla or shiso leaf is traditionally used in sushi for its health benefits and unique flavour. However, the plastic substitute is preferred by some due to its convenience and ability to maintain its appearance over time, especially for delivery and takeout sushi. The plastic variety is also used to add a pop of colour to the dish, making it more attractive to customers.
While the plastic substitute has its advantages, it cannot replicate the unique fragrance and texture of the fresh perilla or shiso leaf. The leaf is known to have antimicrobial properties and was traditionally used to preserve the freshness of the sushi and prevent the transfer of flavours and scents between different types of sushi and sashimi. The use of the leaf was also an indicator of the sushi's freshness, as consuming the sushi before the leaf wilted ensured it was still delicious and safe to eat.
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It's used for decoration and to improve the sushi's appearance
The green plastic in sushi is called "mountain baran" or "sushi grass". It is used to separate different types of sushi and sashimi, preventing the transfer of flavours and smells. This maintains the freshness and taste of the sushi.
The use of green plastic in sushi originated from the practice of using real leaves, such as bamboo leaves, orchid or lily leaves, known as "haran" in Japanese. These leaves served the same purpose of separating the ingredients and preserving their flavours. However, fresh leaves can wilt and have size limitations. Plastic, on the other hand, is durable, allows for various sizes and cuts, and provides a colourful decorative element, especially for takeout sushi.
The green plastic is designed to mimic the appearance of a Sasa (Broadleaf bamboo) or Haran (Aspidistra elatior) leaf. It adds a pop of green colour to sushi presentations, making them more visually appealing. This practice is known as "Yama-kiri", a design technique used to decorate sushi.
While plastic has its advantages, it cannot replicate the fragrance and texture of fresh leaves. Some people prefer the use of real leaves, such as Shiso or Perilla leaves, which are not only decorative but also have health benefits. These leaves are traditionally included with sushi to aid in digestion and combat potential food poisoning from fish.
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It's preferred for takeout sushi as it doesn't wilt
The green plastic in sushi is called "mountain baran" or "sushi grass". It is a plastic substitute for the traditional use of fresh leaves, such as bamboo, orchid, or lily leaves, placed between sushi and sashimi to separate different types and prevent the transfer of flavours and smells.
The use of plastic grass in sushi is particularly common for takeout or delivery sushi as it does not wilt and maintains its colourful appearance over time. This is in contrast to fresh leaves, such as Sasa (broadleaf bamboo), which are traditionally used but wilt easily, making them less suitable for takeout sushi as they can indicate the freshness of the sushi.
The use of plastic grass in sushi began around the mid-1960s when supermarkets in Japan were looking for ways to cut costs and offer lower prices. Plastic was a cheaper alternative to fresh leaves and allowed for a wider variety of sizes and cuts.
While plastic grass serves a functional purpose in separating sushi and maintaining its appearance during takeout, it is important to note that it does not replicate the unique fragrance and texture of fresh leaves. The use of fresh leaves in sushi, such as the Shiso or perilla leaf, also provides health benefits and is traditionally included to combat the potential effects of food poisoning from raw fish.
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Frequently asked questions
The green plastic in sushi is called "mountain baran" and is meant to represent the perilla or shiso leaf, which is included to be eaten with raw fish.
The green plastic is there to keep the different types of sushi and sashimi separate. This prevents the flavours and smells from transferring.
The green plastic is called "baran", "sushi grass", or "bento grass".
The plastic green is not necessary and is mostly used for decoration. It is preferred for takeout and delivery sushi because it doesn't wilt and maintains its appearance.
If you're looking for an alternative to the single-use plastic, you can use lettuce, a banana leaf, or the traditional bamboo leaves, known as "haran".











































