Left side
Mochi
Japan / Hawaii · ancient · mochitsuki tradition
Sticky rice steamed and pounded (mochitsuki) until a smooth dough forms, then shaped into balls or filled with sweet bean paste. In Hawaii, butter mochi is the regional adaptation.
Mochi vs Glutinous Rice Cake.
Hawaii / Japan vs China
Mochi and Chinese nian gao are both made from glutinous (sticky) rice, but the technique and the final dish are different culinary traditions.
UPDATED APR 2026
Right side
Nian Gao (Glutinous Rice Cake)
China · traditional Lunar New Year dessert
Sticky-rice flour mixed with brown sugar (or savory soy + meat), steamed in a tray, sliced into squares or pan-fried. Eaten for Lunar New Year as a wish for "rising year."
Both start with glutinous rice (sometimes called sweet rice or mochigome) and end up sticky and chewy. After that, the techniques diverge. Japanese mochi is pounded — a wooden mallet against a wooden mortar, pounding cooked rice grains into a single elastic dough. Chinese nian gao is mixed from rice flour and sugar, then steamed in a pan as a single block. The two traditions answer "what to do with sticky rice" in opposite ways.
Hawaii’s contribution is butter mochi — a Japanese-Hawaiian invention that uses glutinous-rice flour (mochiko) plus butter, eggs, sugar, and coconut milk, baked in a 9x13 pan. Butter mochi is closer to nian gao in technique (mix and bake/steam) than to traditional pounded mochi, but the flavor profile and texture (chewy + buttery + coconut) is its own thing. Hawaii’s mochi tradition is layered.
Starting formWhole steamed glutinous riceGlutinous rice flour
TechniquePounded into elastic doughMixed and steamed in pan
TextureStretchy, elastic, chewyDense, chewy, sliceable
SweetnessFilled with sweet bean (an), or plainBrown sugar throughout the cake
Hawaii adaptationButter mochi (mochiko + butter + coconut)Less common in Hawaii
Cultural contextJapanese New Year (oshogatsu)Chinese Lunar New Year
ServedIn ozoni soup or with kinakoPan-fried slices, or savory with pork
Shelf life1–2 days fresh; freezes well3–4 days refrigerated
Pounded mochi is one tradition. Steamed nian gao is another. Hawaii’s butter mochi is a third — it borrowed technique from both and ended up its own dish.
The verdict
Cook Mochi when
You want the elastic, mortar-pounded Japanese tradition. Mochitsuki is an event, not a recipe. Hawaii’s butter mochi adapts it for a 9x13 pan.
Cook Nian Gao (Glutinous Rice Cake) when
You want the Chinese New Year tradition — a single brown-sugar cake, sliced and pan-fried, eaten as a Lunar New Year wish.
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