Yu Choy Sum

Malaysia Chye Sim (Yu Choy Sum)

Enjoy the tender stems and fresh leafy crunch of Malaysia Chye Sim (Yu Choy Sum), a popular green leafy vegetable used in Singapore, Chinese and Southeast Asian home cooking. Also known as chai sim, chye sim, choy sum, yu choy sum, yu chai, cai xin, cai xin vegetable, caixin vegetable, Chinese flowering cabbage, flowering white cabbage, sawi vegetable, sawi bunga or 菜心, this vegetable is suitable for stir-fries, soups, blanching and everyday vegetable sides.

Chye sim has long green stems, tender leaves and sometimes small yellow flower buds. The stems are juicy and lightly crunchy, while the leaves become soft and sweet after cooking. Its flavour is fresh, mild, slightly mustardy and sometimes gently bitter, making it a practical vegetable for simple garlic stir-fries, oyster sauce dishes and clear soups.

Origin: Malaysia. Product photos are for reference only. Stem thickness, leaf size, flower buds, tenderness, colour, sweetness, bitterness, packaging and weight may vary depending on harvest, shipment and batch.

Malaysia Chye Sim Quick Facts

Taste and Texture

Malaysia Chye Sim has a clean vegetable flavour with tender leaves and juicy stems. The stems give a light crunch, while the leaves soften quickly when cooked.

If the vegetable has small yellow flower buds, they are edible and can be cooked together with the stems and leaves. The flavour is mild and slightly mustard-like, so it pairs well with garlic, oyster sauce, soy sauce, ginger, sesame oil, soup stock and simple stir-fry seasonings.

• Fresh chye sim from Malaysia
• Tender green leaves with juicy stems
• Small yellow flowers may appear depending on batch
• Mild, fresh and slightly mustardy flavour
• Good for blanching, stir-frying and soups
• Popular green leafy vegetable for Singapore meals
• Suitable for quick home cooking

Chye Sim, Chai Sim, Choy Sum and Cai Xin

Chye sim, chai sim, choy sum, yu choy sum, cai xin and 菜心 all refer to this familiar leafy vegetable used in Chinese and local cooking. The wording changes depending on dialect, language and market habit.

Cai xin in English is commonly translated as choy sum or Chinese flowering cabbage. It is also sometimes called flowering white cabbage, especially when referring to the vegetable’s tender flowering stems.

Baby Chye Sim and Green Leafy Vegetables

Baby chye sim usually refers to younger, more tender chye sim harvested at a smaller size. It may have softer stems and milder leaves, but size depends on the current batch and supplier.

Chye sim is one of the most familiar green leafy vegetables used in Singapore meals. It is easy to cook, quick to prepare and suitable for both simple home dishes and restaurant-style vegetable sides.

How to Cook Chye Sim

Chye sim cooks quickly and should not be overcooked if you want the stems to stay juicy and the leaves to remain green. Wash well, trim the stem ends if needed, then cook briefly.

• Blanch quickly and serve with oyster sauce
• Stir-fry with garlic and light seasoning
• Add to noodle soup or clear soup
• Cook with ikan bilis stock or chicken stock
• Pair with mushrooms, tofu, pork, chicken, prawns or egg
• Add to fried noodles, bee hoon or rice dishes
• Use as a simple green vegetable side dish

Simple Chye Sim with Garlic and Oyster Sauce

For a simple chye sim dish, blanch the vegetables briefly in boiling water, drain well, then finish with garlic oil and oyster sauce. This brings out the natural sweetness of the stems while keeping the leaves tender.

If the stems are thick, cook the stems slightly earlier than the leaves. This helps the stems soften without overcooking the leafy tops.

Chye Sim Soup Ideas

Chye sim works well in clear soups because it cooks quickly and adds fresh green flavour. Add the stems first, then the leaves near the end of cooking.

• Chye sim with ikan bilis soup
• Cai xin vegetable soup with egg
• Chye sim noodle soup
• Chicken soup with choy sum
• Tofu and chye sim clear soup
• Fish slice soup with chye sim

Chye Sim Nutrition Notes

Chye sim is best described as a fresh green leafy vegetable that can be enjoyed as part of a balanced diet. Like many leafy vegetables, it naturally contains water, dietary fibre, vitamin C, folate, potassium and plant compounds found in brassica vegetables.

This is general food information and should not be treated as medical advice.

How to Choose Chye Sim

Choose chye sim with fresh green leaves and firm juicy stems. The leaves should not be slimy, badly yellow or strongly wilted.

• Choose fresh green leaves
• Look for firm stems
• Avoid slimy or mouldy leaves
• Avoid badly yellow or dried-out stems
• Small yellow flowers are normal if still fresh
• Use tender baby chye sim for quick stir-fries
• Cook soon after purchase for best freshness

Storage and Handling

Malaysia Chye Sim has a short shelf life and should be refrigerated as soon as possible after delivery. Keep it dry and unwashed during storage, as excess moisture can make leafy vegetables spoil faster.

Store the vegetable in a produce bag or container in the refrigerator. Wash only before cooking, then drain well before stir-frying, blanching or adding to soup.

• Refrigerate immediately after delivery
• Keep dry and unwashed during storage
• Store in a produce bag or container
• Add paper towel if there is excess moisture
• Wash only before cooking
• Trim tough stem ends if needed
• Use within a few days for best quality
• Discard if slimy, mouldy or badly wilted

Product Notes

This product is sold as Malaysia Chye Sim (Yu Choy Sum). It may also be recognised as chai sim, chye sim, choy sum, yu choy sum, yu chai, cai xin vegetable, caixin vegetable, cai sim, baby chye sim, Chinese flowering cabbage, flowering white cabbage, sawi, sawi bunga, sawi vegetable, green leafy vegetables or 菜心.

Stem thickness, leaf size, flower buds, tenderness, colour, sweetness, bitterness, packaging and weight may vary by harvest, grade, shipment and batch. Product photos are for reference only.

If you are looking for chye sim, choy sum or cai xin vegetable in Singapore, SKC Fruits offers Malaysia Chye Sim (Yu Choy Sum) when available. Please contact us if you need to confirm the latest stock, size, freshness, price or delivery availability before ordering.

Freshness Support

Please check your fruits and vegetables upon delivery. If you receive spoiled, damaged, incorrect or unsatisfactory items, contact us within 2 days of delivery with order details and clear photos. If the issue is due to our selection, packing or handling, approved refunds, replacements or store credits will be processed within 24 hours after review.

Shipping & Delivery

Next-day delivery is available across Singapore. Orders are carefully packed to help maintain freshness and quality during delivery.

Delivery Fees

$5.90 delivery for orders $55–$149.99.
Free delivery for orders $150 and above.

Freshness Support

Please check your fruits upon delivery. If you receive spoiled, damaged, incorrect or unsatisfactory items, contact us via WhatsApp at 8833 3676 within 2 days of delivery with your order details and clear photos.

If the issue is due to our selection, packing or handling, approved refunds, replacements or store credits will be processed within 24 hours after review.

Natural Produce Notice: Fresh fruits are natural produce, so size, colour, sweetness, ripeness, texture and appearance may vary slightly by batch.

Batch Variation: Origin, size, grading and availability may change depending on season and shipment. Please refer to the current product details or contact us before ordering if you need fruits for a specific event, gift or delivery date.

Storage: Please store your fruits properly after delivery. Some fruits should be refrigerated, while others may need to ripen at room temperature before eating.

Product Images: Product images are for illustration and presentation purposes. Actual fruit size, colour and appearance may vary slightly depending on the current batch.