Love all things coffee? This chilled Japanese coffee jelly is a refreshing dessert to enjoy on a hot summer day. Enjoy it plain or with a dollop of fresh whipped cream.

Coffee Jelly (コーヒーゼリー) is a popular Japanese dessert and a true summertime delight! If you’re all for caffeinated desserts, you will fall in love with the mild sweetness and the big coffee flavor it offers. Top this gelatin dessert with a dollop of fresh whipped cream or a spoonful of half and half, oh my, you’d be in heaven!
Table of contents
What is Coffee Jelly?
To put it simply, coffee jelly is gelatinized coffee. A rich and silky coffee jello.
Made of black coffee, gelatin powder, and sugar, coffee jelly or kohii zerii can be found on the menus in many restaurants, cafes, and bakeries in Japan. This chilled dessert is typically served in small cups, and sometimes the jelly is cut into cubes and served in a cup with whipped cream or milk.
While Jell-O desserts have been deemed out of fashion in the US and England, coffee jelly — and many other jelly desserts — never go out of style in Japan. In fact, its popularity lives on even though coffee jelly has been trendy since the 1960s when a Japanese coffee shop chain introduced it in their menu. We enjoy our Jello-Os not only are they light and refreshing, but they also have a solid place in Japan’s culinary history.
The Japanese love a little quick pick-me-up so you can even find pre-made coffee jelly sold in small plastic cups in supermarkets and konbini convenience stores!
Ingredients for Coffee Jelly
It cannot be any easier to make coffee jelly at home! You’ll need only four ingredients.
- Water
- Kanten powder (sub with gelatin or agar agar)
- Sugar
- Instant coffee (or instant espresso coffee for stronger flavor)
In my recipe, I used kanten powder instead of gelatin to make it vegetarian friendly. Kanten is a natural vegetable gelatin made of edible seaweed which can be found at Japanese and Asian grocery stores or online.
If you are going to substitute powdered kanten with gelatin powder or agar agar, use a double portion. My recipe note below explains more.
How to Make Coffee Jelly
- Combine water and kanten powder in a small saucepan. Whisk and bring the liquid to a boil.
- Once boiling, add sugar and instant coffee and cook for 2 minutes.
- Remove from the heat and let cool for 5 minutes.
- Pour into serving dishes. Once the coffee jelly cools down, cover with lids or with plastic wrap and keep in the refrigerator for 4-5 hours, or until the jelly has set.
- Serve it chilled.

Different Ways to Enjoy Coffee Jelly
For an elegant presentation, serve the dessert solid in glass dishes like how I made them here. You can also pour the coffee mixture in a baking pan, cut into cubes and serve them in a bowl.
You can even add the jiggly, translucent cubes of coffee jelly into your milkshakes, lattes, ice cream float, or sundaes for additional flavor and texture! It will instantly level up your dessert games.
My favorite way to serve coffee jelly is with whipped cream on top. Or try it with a few tablespoons of half & half.
It is truly a simple yet lovely dessert. I often serve coffee jelly as a summer dessert, but every now and then, I’ll have it for afternoon tea break and imagine myself in a little cafe in Japan.

More Japanese Dessert Recipes You’ll Love
- Japanese Cheesecake
- Tofu Pudding (Blancmange)
- Fruit Jelly
- Orange Jelly
- 10-Minute Japanese Custard Pudding
- No-Bake Creme Caramel
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Easy Japanese Coffee Jelly
Video
Ingredients
- 2½ cups water
- 1½ tsp kanten (agar) powder (see Notes; to substitute powdered kanten with gelatin powder or agar agar, test first using a double portion and see if it sets, as each brand of gelatin/kanten/agar sets differently; gelatin won‘t solidify if you heat the mixture too long while kanten requires cooking for 2–3 minutes)
- 5 Tbsp sugar
- 2 Tbsp instant coffee
Instructions
- Gather all the ingredients.
- In a small saucepan, combine 2½ cups water and 1½ tsp kanten (agar) powder and whisk together. Then, bring the liquid to a boil over high heat.
- Once boiling, turn down the heat to a simmer. Add 5 Tbsp sugar and 2 Tbsp instant coffee and cook, stirring occasionally, for 2 minutes.
- Remove from the heat and let cool for 5 minutes.
- Pour into serving dishes. Scoop up any bubbles on the surface with a spoon and discard. Once the coffee jelly cools down, wrap with plastic wrap and keep in the refrigerator for 4–5 hours.
To Serve
- Serve with whipped cream, mint, and a coffee bean on top. It‘s not vegan-friendly, but the coffee jelly is great with 1–2 Tbsp of half & half poured on top.
To Store
- You can keep the coffee jelly in the refrigerator for up to 2 days.
Notes
- Kanten powder = 1 tsp (2 g)
- Kanten stick = ½ stick (4 g)
- Kanten thread = 12 threads (4 g)
This is so good! I used to eat coffee jelly all the time when I lived in Japan and was so disappointed at how expensive a 3-pack of coffee jelly is at the Japanese markets in the U.S. Thanks to you I can eat this whenever I want! Thank you so much for sharing 🙂
Hi Anita! So happy to hear you enjoyed this recipe and thanks for your kind feedback! Yeah, those imported jelly packs are so expensive here… I’m glad you enjoyed these homemade ones! 🙂
Hi Nami,
I made your coffee jelly and love it! I wanted to know if you have tried making matcha jelly? I have a lot of extra matcha powder (I make matcha white chocolate chip cookies a lot) and want to see if I can make matcha jelly similar to the coffee jelly.
I love your blog and your Instagram posts! Miso is such a smart, sweet doggie! Thanks for sharing your family life and recipes with us!
Hi Susan! Thank you so much for trying this recipe and I’m so glad you enjoyed it. 🙂
I make this Matcha Pudding, or in Japanese, Matcha Purin. Purin is a custard dessert, but this Matcha Purin doesn’t have egg in it. So it’s really like jelly. Take a look and see if you’re interested in making this. 🙂
https://www.justonecookbook.com/green-tea-pudding/
Thank you for your kind words! xo
I find this recipe so easy and amazing!
Even though I had to replace the Agar-agar with Cornstarch, it still came out really well.
Thank you for sharing this recipe!! 🙂
Hi Ash! Thanks for trying this recipe! I had no idea cornstarch would work for this recipe. Thanks for letting me know. 🙂
Namisan,
Do you know how I could do this recipe with gelatine sheets?
Arigatou!
Hi Maya! Yes you can. Please check the weight of your gelatine sheet to compare with kanten used in this recipe. 🙂
I have always wanted to try and make coffee jelly. I am super excited to do so…. only I have flavored instant coffee in my pantry. Is that okay to use in this recipe?
Hi Taylor! Sure, it will come out as that flavored coffee taste. 🙂 Hope you enjoy the recipe!
I look for coffee jelly recipe because of anime “saiki kusuo psi nan” who loves coffee jelly.
Thanks for stopping by! It looks like many people stopped by from the anime. 🙂
Hi Nami, thanks for sharing this recipe! I found a packet of powdered Konnyaku for making fruit jelly, but coffee jelly is my favorite. Could I possibly substitute equal amounts of konnyaku powder instead of agar agar? Thanks!
Hi Mia! I’ve never used konnyaku powder so I don’t know what’s the right amount… 🙁 Sorry I can’t help…
Can’t wait to try this. Do we have to use instant coffee?
Hi Stephanie! I used instant coffee for this particular recipe, but you can use the real coffee instead of water. Please adjust the coffee flavor. 🙂
Hello and thanks for a lovely recipe!
I`m curious as to why not to use vegetarian “gelatin” powder?
Hi Amel! Japanese use kanten/agar agar powder often to replace gelatin but it’s not because we need it to be vegetarian/vegan. We enjoy the different texture kanten/agar agar gives. 🙂
Ahh! I’m also really happy to see this! Coffee jelly was one of my favorite desserts when I lived in Japan, but when I came back to the States, I had trouble finding it. Then I found one you can make from a box, but it tasted awful. This recipe looks really simple so I think even I can make it. I can’t wait~~~!
Hi Courtney! I know, this coffee jelly is so delicious, but I don’t know why we don’t find it in the US… there are lots of coffee lovers here. This one is very good, I hope you enjoy making and eating this! 🙂
Wow! Looks delicious! Can’t wait to make this! I’ve always loved Coffee Jelly!
Thanks Megumi! Hope you like this recipe – it’s easy and delicious, especially on warm days!
Coffee Jelly is one of my favorite summer time dessert in Japan. Well, any time is a good time for me actually^^!
However, my husband always scream about this combination of Coffee & Jelly.
“COFFEE JELLY??? %^&$!!”
He doesn’t even drink coffee, so what can I say?
It’s the best and yummiest of all 🙂
(That’s my opinion!)
Hi Ayako! Haha I actually had no idea coffee jelly was Japanese/Asian dessert, as coffee is a western drink… I was in shock that there is no such thing exists! And many of comments here say “creative” and “never had this”. This jelly is so good that it should be popular in the western countries too! 🙂
The color of this dessert is beautiful, especially the edges where the jelly touches the glass. Everything coffee-flavored is sure to be a favorite on my list of desserts. =) Thanks for sharing this easy-to-make recipe.
I hope you and your family enjoyed a wonderful Easter weekend as well!
Thank you so much for your kind words, Kimmi! The spring break has been good so far. 🙂 Hope you enjoy this coffee jelly – so delicious!
What is the refrigerator life of the coffee jelly?
Hi Jody! Thank you for asking! I’m going to update my recipe with this info. 🙂 It should be consumed within 2 days. 🙂
I had no idea it was so easy to make coffee jelly! I can only find agar in blocks here, can I use that instead of the powder?
If so, how much would I use? Thank you!
Hi Donna! 1 stick of agar powder (4 gram) is same as 1 kanten stick. So you just want to break off 1/4 and use the rest. I tried making with 4 gram, but the jelly is too hard for my preference. 3 gram is just right. 🙂
Thank you so much for sharing the conversion! I really want to try this. 🙂
Hope you enjoy, Donna! 🙂