Direct answer: Chinese sesame balls stay round when the glutinous-rice dough is soft but not sticky, the filling is completely enclosed, and frying begins at about 285 F/140 C. Turn and gently press the balls as they expand, then raise the oil to 340 F/171 C to set a crisp golden shell.
Key takeaways
- Use glutinous rice flour, not regular rice flour.
- Dissolve sugar in hot water before mixing the dough.
- Seal the red bean paste without trapped air or cracks.
- Start in moderately hot oil and increase temperature gradually.
- Keep water away from the fryer and never leave hot oil unattended.
What are Chinese sesame balls?
Chinese sesame balls are fried glutinous-rice pastries known as jian dui in Cantonese cooking and ma tuan in Mandarin. A sesame-coated shell expands around a small filling, commonly sweet red bean paste, lotus seed paste or black sesame paste. The ideal ball is round and crisp outside with a thin chewy interior and a hollow space around the filling.
The hollow center comes from steam expanding the dough during frying. Starting too hot browns the sesame before the dough can expand; starting too cool for too long makes the shell greasy. Controlled temperature changes solve both problems.
Ingredients for 12 sesame balls
- 1 1/2 cups/180 g glutinous rice flour
- 1/3 cup/65 g granulated sugar
- 1/2 cup/120 ml hot water, plus up to 2 tablespoons
- 1 teaspoon neutral oil for the dough
- 6 ounces/170 g smooth sweet red bean paste
- 1/2 cup/70 g raw white sesame seeds
- 1 teaspoon water for coating
- 1 1/2 quarts/1.4 L neutral frying oil, as needed for a 3-quart pot
Preparation takes about 35 minutes. Frying in three batches takes 20 to 25 minutes.
Step 1: portion the filling
Divide red bean paste into 12 portions of about 14 g and roll each into a compact ball. If the paste is very soft, chill it for 20 minutes. Firm, equal filling portions are easier to enclose and help the sesame balls expand evenly.
Step 2: mix the dough
Dissolve sugar in 1/2 cup hot water. Put glutinous rice flour in a bowl and add the sweetened water gradually while stirring. Add 1 teaspoon oil and knead for 3 to 4 minutes.
The dough should feel smooth and pliable, like soft modeling clay. If it cracks when pressed, knead in extra water 1 teaspoon at a time. If it sticks heavily to your hands, add glutinous rice flour 1 teaspoon at a time. Cover and rest 15 minutes.
Step 3: fill without cracks
Divide dough into 12 equal portions, about 30 g each. Keep them covered. Flatten one portion into a 3-inch/7.5-cm disk with a slightly thicker center. Place red bean paste in the middle.
Bring the dough upward, pinch the opening closed, and roll gently between your palms. Inspect the entire surface. Patch any visible crack with a tiny piece of damp dough; exposed filling can leak into hot oil.
Step 4: apply sesame evenly
Put sesame seeds in a shallow bowl. Lightly moisten one dough ball with wet hands, then roll it in the seeds. Press and roll between your palms so the sesame adheres firmly. Repeat with all balls.
Use only a thin film of water. A wet exterior makes seeds slide and introduces dangerous droplets near frying oil.
Step 5: set up the fryer safely
Fill a heavy, deep pot no more than halfway with oil. Clip on a frying thermometer and heat to 285 F/140 C. Keep the pot handle turned inward. Prepare a spider or slotted spoon and a wire rack before adding food.
Never add water to an oil fire. Keep a fitted metal lid nearby, and if oil smokes heavily, turn off the burner and move away while it cools. Do not attempt to carry a pot of hot oil.
Step 6: fry slowly and expand
Lower four balls into the 285 F/140 C oil. They will sink at first. Stir gently so they do not stick to the bottom. After 2 to 3 minutes they should begin floating.
Use the back of a spider to press each floating ball gently under the oil for 2 seconds, then release it. Rotate and repeat for 3 to 4 minutes. This controlled pressure encourages even expansion; do not squash hard enough to split the shell.
Step 7: increase heat for color
Raise the burner gradually so the oil reaches 330 to 340 F/166 to 171 C. Continue turning for 2 to 3 minutes until the balls are evenly golden and feel firm. Total frying time is usually 7 to 9 minutes per batch.
Remove to a wire rack. Let oil return to 285 F/140 C before beginning the next batch. Starting every batch at the same temperature makes results repeatable.
Step 8: cool before eating
Cool sesame balls for at least 10 minutes. The filling holds heat longer than the shell and can burn the mouth. The shell becomes crisper as surface steam escapes.
Substitutions
Lotus seed paste
Use the same weight of firm lotus paste. Chill and portion it before shaping.
Black sesame filling
Use a prepared black sesame paste firm enough to roll. Do not confuse the dark filling with the white sesame coating.
No filling
Make smaller empty balls, sealing each carefully. They expand more dramatically and require especially gentle pressing.
Brown sesame seeds
Hulled white seeds give the classic appearance, but unhulled seeds work and taste slightly stronger.
Common mistakes
The balls explode or leak
The shell had a crack, trapped air or exposed filling. Seal carefully and keep oil temperature controlled.
The sesame falls off
The dough was too dry or seeds were not pressed in. Moisten lightly and roll firmly between your palms.
The outside browns before expanding
The starting oil was too hot. Begin near 285 F/140 C and raise heat only after the balls float and enlarge.
The shell is greasy
The oil stayed too cool or the pot was crowded. Fry four at a time and finish near 340 F/171 C.
The balls collapse after frying
They were removed before the outer structure set. Continue turning at the higher finishing temperature until firm and evenly golden.
Food safety, allergens and storage
Sesame is a major food allergen in the United States. Confirm that every diner can safely eat sesame, and prevent cross-contact when cooking for someone with allergies. Glutinous rice flour contains no gluten by its name alone, but packaged flour and fillings may be processed with other allergens; check labels.
Cool leftovers within 2 hours and store covered for up to 3 days. Reheat in a 350 F/177 C oven or air fryer for 5 to 7 minutes. Microwaving softens the shell. For oil disposal, cool it completely, strain into a closed container, and follow local disposal rules; never pour oil down a drain.
Related lessons
If you enjoy filled Chinese sweets, try black sesame tang yuan without cracks. For another dough-sealing project, review har gow wrappers without cracking. Our guide to crisp potstickers also explains staged pan temperature.
Recipes4Less courses demonstrate dough texture, sealing and safe frying movement visually for beginners.
FAQ
Is glutinous rice flour the same as rice flour?
No. Glutinous rice flour becomes stretchy and chewy; regular rice flour produces a brittle, unsuitable dough.
Why do sesame balls become hollow?
Water in the dough turns to steam, expanding the flexible glutinous-rice shell around the denser filling.
Can I air-fry sesame balls?
Air-frying does not create the same even expansion and crisp shell. This recipe is designed for deep frying.
Can I prepare them ahead?
You can shape them a few hours ahead and refrigerate covered. Bring them toward room temperature for 15 minutes before frying.
Can frying oil be reused?
Yes, if it never smoked or developed off odors. Cool completely, strain, label and store sealed away from light.
Conclusion
Round, hollow sesame balls depend on a crack-free soft dough and staged frying: expand slowly near 285 F/140 C, press and rotate gently, then finish near 340 F/171 C. Careful sealing and oil safety matter as much as color.