How to make traditional mochi
Master traditional mochitsuki: soak sweet glutinous rice, steam it in bamboo, rhythmically pound it to a silky gloss, and shape soft, stretchy mochi cakes.
This guide shows how to make traditional mochi in 12 hours soaking + 1.5 hours active. Start with rinse and soak the mochigome; follow the safety notes and step checkpoints below.
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🧰 Required Tools & Equipment
- ✓ Wooden mortar (usu) or heavy granite mortar
- ✓ Wooden mochi mallet (kine) or heavy hardwood pestle
- ✓ Bamboo steamer basket (seiro) with matching pot
- ✓ Cotton muslin or cheesecloth steaming liner
- ✓ Large flat wooden board or baking tray
- ✓ Small bowl for dipping water
📦 Materials & Supplies
- ✓ 3 cups Japanese sweet glutinous rice (mochigome)
- ✓ Clean water for soaking and hand wetting
- ✓ 1 cup potato starch (katakuriko) or cornstarch
- ✓ 1/2 cup sweet red bean paste (anko, optional)
⚠️ Safety Checkpoints & Warnings
- • Establish clear verbal cadence between the pounder and the turner to prevent mallet strikes to hands.
- • Open the bamboo steamer away from your face to avoid burns from concentrated steam.
- • Serve finished mochi in small, chewable portions to mitigate choking risk.
📋 Step-by-Step Guide (5 Steps)
Rinse and Soak the Mochigome
Rinse the mochigome rice gently in cold water, swirling and draining until the runoff runs clear (about 4-5 changes). Submerge the washed grains in at least 3 inches of cold water and leave to soak at room temperature for 8 to 12 hours. Fully hydrated grains will break cleanly when pressed firmly between your thumb and forefinger.
- • Rice grains turn chalk-white and opaque throughout
- • A soaked grain crushes smoothly under finger pressure without a hard core
- • Under-soaking the rice, resulting in hard, unpoundable gritty bits in the finished mochi
- • Using regular long-grain or standard sushi rice instead of mochigome
Steam the Rice in Bamboo
Drain the soaked rice thoroughly in a colander for 15 minutes. Line your bamboo steamer basket with a wet cotton muslin cloth, spread the drained rice evenly inside, and poke several deep steam vents through the rice layer with a chopstick. Steam over boiling water on high heat for 40 to 45 minutes until the grains are tender, glassy, and slightly sweet to taste.
- • Rice grains appear translucent and glossy rather than chalky white
- • Grains squish uniformly between fingers without any dry crunch
- • Boiling the rice directly in water rather than steaming it, which makes the dough overly wet and runny
- • Letting the water reservoir boil completely dry during the steam cycle
Pre-Mash the Steamed Rice in the Mortar
Warm the mortar with hot water, wipe it dry, and immediately transfer the piping-hot steamed rice into the basin. Using the head of the wooden mallet like a pestle, press down firmly with your body weight and work the rice in a circular motion against the mortar walls. Grind continuously for 3 to 5 minutes until individual grains break down into a sticky, cohesive mass before starting overhead swings.
- • Individual rice grains coalesce into a single lumpy, sticky dough
- • No loose dry grains fly out when gently prodded
- • Swinging the mallet immediately into loose rice, sending hot grains flying across the room
- • Letting the steamed rice cool before pre-mashing, which makes the starches seize up
Rhythmically Pound and Turn the Mochi
Coordinate two roles: the pounder brings the mallet down squarely in the center of the mass, while the turner quickly wets their fingers in cool water, folds the mochi dough over itself, and pulls their hands completely out. Maintain a steady rhythm: pound, pull back mallet, wet-slap and fold dough, repeat. Pound vigorously for 8 to 12 minutes until the texture transforms from textured dough to an ultra-smooth, glossy, stretchy mass.
- • Dough surface develops a silky sheen and complete uniformity without visible grain specks
- • Mochi stretches effortlessly several inches when lifted on the mallet head
- • Using excessive water on hands, resulting in a soggy, slack dough that cannot hold its shape
- • Swinging off-center and chipping the wooden rim of the mortar
Dust, Portion, and Shape the Mochi
Generously dust a clean wooden board or baking sheet with potato starch to prevent sticking. Transfer the hot mochi ball onto the starched surface, dust the top lightly, and pinch off fist-sized portions using the webbing between your thumb and index finger. Tuck the rough edges underneath to form smooth, round buns (marumochi), or flatten and enclose a small scoop of red bean paste before pinching the seam closed.
- • Smooth, domed round cakes with a taut outer skin
- • Seams on filled mochi are tightly sealed with no red bean paste leaking out
- • Letting starch get trapped inside dough seams during shaping, which prevents the mochi from sealing shut
- • Handling the mochi with dry, bare hands without enough starch coating
Credit: inspired by an original tutorial by Megan and Ben — watch the original on YouTube.
Don’t have everything?
- No Usu (traditional wooden mortar) and Kine (mallet)? Heavy-duty stand mixer with a dough hook or a sturdy pestle in a heavy stone mortar
- No Bamboo steamer basket? Metal steamer pot lined with clean unbleached cheesecloth or a thin linen towel
- No Potato starch (katakuriko)? Cornstarch or tapioca starch