I first tried grass jelly at Meet Fresh, their Icy Grass Jelly Signature, and even though it’s way milder than the sweets I usually go for, I couldn’t stop thinking about it. Something about those smooth, jet-black cubes with a creamy drizzle just works. If you like chilled desserts like mango sago or banana con yelo, this has that same cold, spoonable, refreshing kind of appeal. This black grass jelly dessert is my at-home version, and it turned out even easier than I expected.
The jelly itself is silky and subtly herbal. A drizzle of condensed milk and half-and-half brings just the right sweetness. Best served cold, no oven required, and totally customizable with your favorite toppings.
Jump to:
- What Is Black Grass Jelly?
- Why You'll Love This Recipe
- Ingredients
- Substitution and Additions
- How To Make Grass Jelly Dessert
- Rose's Tips and Troubleshooting
- Fun Variations to Try
- What To Serve With This
- How to Store Leftovers
- Recipe FAQs
- More No- Bake Recipes to Try
- Did you try this recipe?
- Easy Black Grass Jelly Dessert
What Is Black Grass Jelly?
Black grass jelly is a popular Asian dessert made from the mesona plant, not seaweed. It’s cooked down, mixed with starch, then chilled until it sets into a dark, soft jelly.
The flavor is mild and slightly herbal, with a light bitterness that tastes especially good with something sweet. It’s often served in cold drinks and chilled desserts, especially on hot days.
Why You'll Love This Recipe
- Completely no-bake. Stovetop only, and most of the time is just chilling in the fridge.
- Light and refreshing. Not heavy, not rich - just cool, smooth, and satisfying.
- Easy to customize. The jelly is the base; the toppings are all you. Coconut milk, fresh fruit, boba, brown sugar syrup - you choose.
- Dramatic without the effort. That jet-black color makes it look like you tried hard. You didn't.
- Naturally gluten-free. Simple, clean ingredients.
Ingredients
Here's what you'll need:
- Grass Jelly Powder – The base of this dessert, made from natural seaweed.
- Condensed Milk – Adds a creamy sweetness to balance the jelly’s mild flavor.
- Half-and-Half – A blend of milk and cream that gives the dessert a silky texture.
See recipe card for quantities.
Substitution and Additions
- Coconut Milk – Swap out half-and-half for coconut milk to add a tropical vibe.
- Honey or Maple Syrup – A lighter, natural sweetener to replace condensed milk.
- Fresh Fruit – Add toppings like lychee, mango, or berries for a pop of color and flavor.
- Boba or Tapioca Pearls – For extra chewiness, throw in some boba pearls.
How To Make Grass Jelly Dessert
- Dissolve the powder. Add the grass jelly powder to a pot with cold water. Whisk until fully dissolved before turning on the heat - undissolved powder can cause lumps.
- Cook until thickened. Bring the mixture to a boil over medium heat, stirring constantly. Once it reaches a full boil, keep stirring and cook for another 1-2 minutes until it looks smooth and slightly glossy. If you see any foam or bubbles on the surface, skim them off.
- Pour and cool. Pour the hot jelly liquid into a shallow container or baking dish. Let it sit at room temperature until it stops steaming, then transfer to the refrigerator. Chill for at least 30 minutes, or until fully set. For cleanest cuts, chill for 1-2 hours or overnight.
- Cut and serve. Once set, cut the jelly into cubes or rectangles - whatever size you like. In a small bowl, stir together the condensed milk and half-and-half. Arrange jelly cubes in a serving bowl and pour the milk mixture over the top. Serve cold.
Rose's Tips and Troubleshooting
- Dissolve the powder in cold water first. Always start with cold water and whisk well before heating. If you add powder to hot water, it clumps.
- Don't skip stirring. Keep stirring the whole time it's on the heat - it can scorch on the bottom if left alone.
- Jelly didn't set? You likely used too much water. Check your package ratio. Most brands need about 3 to 4 cups of water per 24g packet. Less water means firmer jelly, and more means softer and more wobbly. The same rule is what keeps the pandan cubes firm in buko pandan salad, where I use three-quarters of the water the box calls for.
- Wait before cutting. The jelly needs to be fully cold before you cut it cleanly. If it's still warm, it'll stick to the knife and fall apart.
- Taste before you drizzle. The jelly itself is barely sweet. Adjust your condensed milk ratio to your preference - some people like just a light drizzle, others like it creamy and sweet.
- Make it ahead. The jelly keeps in the fridge for up to 3 days. Keep the milk mixture separate and pour it over just before serving so the texture stays perfect.
If you love easy chilled Asian desserts, the avocado with condensed milk is another quick one that uses the same drizzle idea.
Fun Variations to Try
- Coconut Grass Jelly - Use coconut milk instead of half-and-half for a richer, tropical flavor. Top with fresh mango for an extra pop.
- Brown Sugar Milk - Skip the condensed milk and make a simple brown sugar syrup instead. Pour over jelly with a splash of milk and plenty of ice. Very bubble tea shop.
- Matcha Drizzle - Whisk 1 teaspoon of matcha powder into warm water, sweeten lightly, and drizzle over the jelly for a green tea twist.
- Boba Bowl - Add cooked tapioca pearls and sweetened red beans alongside the jelly. Classic and totally satisfying.
- Fruit Topped - Pile on lychee, sliced strawberries, or mango chunks. The sweet fruit plays perfectly against the herbal jelly.
What To Serve With This
Black grass jelly dessert is great on its own, but a few things make it even better:
- Crushed or shaved ice underneath the jelly for an extra-cold, refreshing base.
- Sweetened red beans for a more traditional Chinese dessert bowl feel.
- Fresh fruit like lychee or mango for color, sweetness, and texture contrast.
- Tapioca pearls or boba for chewiness - turns it into a more substantial dessert.
For another light and refreshing Filipino-style no-bake dessert, try the Filipino taho - silken tofu with syrup and sago that has a similar cooling, gentle sweetness.
How to Store Leftovers
Store cut jelly in an airtight container in the refrigerator for up to 3 days. Keep the milk mixture in a separate container and pour it over just before serving - this keeps the jelly from getting watery and the texture stays best.
If you used canned jelly, store any unused portion covered in the fridge for up to 3 days as well.
Recipe FAQs
Black grass jelly is made from the dried leaves and stalks of the mesona plant (Mesona chinensis), a member of the mint family. It's not seaweed. The plant material is boiled down with starch until it thickens, then set into a jelly as it cools.
It has a mild, slightly herbal flavor with a hint of bitterness - nothing overpowering. The texture is smooth and silky, similar to Jell-O but a little softer. Once you add a sweet topping like condensed milk or sugar syrup, the mild bitterness becomes a pleasant contrast.
Yes, it is a low-calorie, naturally gluten-free option, especially when paired with healthier toppings and sweeteners.
No, coconut jelly uses coconut water or milk. This recipe can lean that way if you use coconut milk.
More No- Bake Recipes to Try
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Easy Black Grass Jelly Dessert
Equipment
- 1 small pot
Ingredients
- 24 grams grass jelly powder
- ½ cup condensed milk
- 1 cup half and half
Instructions
- Cook the grass jelly according to the package instructions. If you prefer a firmer jelly, reduce the water slightly.24 grams grass jelly powder
- Allow the jelly to cool completely, then cut it into cubes or slices.
- In a bowl, mix half-and-half and condensed milk until well combined.1 cup half and half, ½ cup condensed milk
- Pour the sweetened mixture over the jelly cubes and serve chilled.
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Notes
- Use less water when cooking the grass jelly for a firmer texture.
- Let the jelly cool fully before cutting, or it may stick together.
- Adjust sweetness by adding more or less condensed milk to suit your taste.
