Mooncake Types & Flavors Guide: Cantonese, Snowskin & Lava

What a Mooncake Actually Is

A mooncake is a dense, palm-sized pastry eaten during the Mid-Autumn Festival, which falls on the fifteenth day of the eighth lunar month — somewhere between early September and early October on the Gregorian calendar, moving each year.

Two things surprise most first-time eaters, so they are worth saying up front. The first is how sweet and heavy these are: a full-size Cantonese mooncake runs around 180 grams, most of that solid paste under a thin crust, which is why it is cut into four or eight small wedges and shared with tea rather than eaten like a cupcake. One wedge is a serving. Snowskin and lava-custard versions are usually made much smaller, around 50 grams, and are meant to be halved or eaten in a couple of bites. The second is the salted duck egg yolk sitting in the middle of many of them — a duck egg cured in brine until the yolk is firm, deep orange, and intensely savory. Set into sweet paste it reads as salty rather than eggy, with a dry, dense crumb. The sweet-and-salty contrast is the point of the style, not a mistake, and it is the flavor most people need a moment to adjust to. If that does not sound appealing, plain lotus paste with no yolk sits on the same shelf and is the easier first purchase.

The round shape echoes the full moon, and Chinese tradition reads the round yolk the same way. Because the lunar month begins at the new moon, the fifteenth day falls at or within a day of the true full moon — there is even a saying that the fifteenth's moon is roundest on the sixteenth. Either way the difference is invisible to the eye, and the part that matters is the same: the sharing is the observance.

The Ones You Will Actually Meet

Most of what you will find in a Western supermarket is one of these three. They are stocked by the same Asian supermarkets and sit side by side in the same season.

Cantonese (广式月饼) — the default

This is the one people picture: a glossy brown, thin-skinned puck with a pattern pressed into the top, usually sold in a heavy decorated tin. It accounts for the large majority of what you will find.

The crust is a syrup dough that goes through a resting process called oil return, which softens and darkens the baked shell over several days. Fillings are smooth and very dense — lotus seed paste (莲蓉) is the benchmark, red bean paste (红豆沙) the other classic, and either can come with one or two salted egg yolks buried inside.

A note on yolk count, because the boxes advertise it: single, double, and occasionally four. That is a richness and price ladder set by the bakery rather than a tradition. A double-yolk mooncake is simply saltier and heavier than a single, and priced accordingly.

Snowskin (冰皮月饼) — the easier entry point

Developed in Hong Kong in the late twentieth century as a lighter alternative, snowskin mooncakes are never baked. The skin is cooked glutinous rice flour, soft and slightly chewy in the way mochi is, and they are sold and eaten cold. Much of what you will find ships frozen, so let one stand a while before eating — a frozen skin is hard rather than chewy.

If you find baked lotus paste heavy, start here. Fillings run from the traditional bean pastes to durian, pandan, and a long tail of fruit and chocolate flavors, and the skins are usually tinted to match — so the "snow white" description you will see is only true of the plainest ones.

Lava custard (流心奶黄月饼) — warm it first

Also a Hong Kong invention, and the one most often served wrong. These have a buttery crust around a salted-egg custard with a molten center, and they are sold chilled or frozen. Straight from the refrigerator the center is set, not liquid. Warm one briefly and it turns molten and flows when cut. Boxes usually carry the maker's own time and temperature — follow it if it is there, and eat it straight away. The warming step is the whole trick, and skipping it is why people occasionally think they got a defective box.

If you find a Teochew bakery (潮式月饼 / 朥饼)

Worth seeking out. These are also called 朥饼 — 朥 is the Teochew word for lard, so the name describes the crust rather than the filling and covers the whole family. The lard makes the pastry laminate into visible flaky layers — look at the side of the cake, not the top — and the top is usually flat with a red stamp pressed into it. That flat, layered, stamped look is how you tell one from the glossy brown Cantonese puck at the same counter. The most classic filling is dark red bean paste (乌豆沙); yam paste (芋泥) is the other common one.

The Fillings, and What They Mean

Chinese tradition attaches readings to some of these, and not to others. Where a reading is genuinely traditional it is worth knowing; where it is a marketing invention it is not, so this section only carries the documented ones.

• Lotus seed paste (莲蓉) — the benchmark sweet filling, made by boiling, puréeing, and slow-frying lotus seeds with sugar and oil until glossy.
• Salted duck egg yolk (咸蛋黄) — read as the full moon. See the description above for what it actually tastes like.
• Red bean paste (红豆沙) — made from azuki beans. No particular reading attaches to it; it is simply the comfort-food filling, and the least challenging of the four if you are buying for a mixed table.
• Five nuts (五仁) — five specific kernels: walnut, almond, the kernel of the Chinese black olive (橄榄仁 — not the Mediterranean table olive), melon seed, and sesame. Some bakeries substitute peanut for the olive kernel, which is the harder of the five to source. The conventional reading is simply five blessings, or general good fortune. Be warned that this is the most polarizing mooncake on the shelf: chewy and fragmented rather than smooth, closer to a dense nut brittle than to a paste, and the style most often left uneaten by someone expecting lotus paste.

Where to Buy, and When

Boxes appear about four to six weeks before the festival — so anywhere from early August to early September, depending on the year — and disappear within days of it.

• Chinese and pan-Asian supermarkets — the widest range and the easiest place to buy a single mooncake rather than a boxed set, which is what you want if you are trying one for the first time.
• Chinatown bakeries — the best place for freshly made styles and for asking what is in what. Teochew 朥饼 is a Teochew-community specialty, so if you see one outside a Teochew neighbourhood, buy it.
• Hotel and restaurant boxes — the gift-grade tier, usually four or eight to a box, often needing to be pre-ordered.
• Larger mainstream supermarkets — increasingly stock a small selection in the world-food aisle.

Boxed sets of four are the standard retail unit. If you are giving them rather than eating them, the count matters — our Mid-Autumn gifting guide covers counts, recipients, and packaging.

Three More Styles, Mostly Out of Reach

Naming these is useful mainly so you recognize that "mooncake" covers far more than the tin in the supermarket.

Suzhou (苏式月饼) builds a flaky, paper-layered pastry from lard and wheat dough. Its flagship is a savory fresh-pork mooncake (鲜肉月饼) eaten hot within minutes of baking, so it does not survive packaging or shipping and you will not find it boxed outside China. Yunnan (滇式月饼) has a firm, biscuit-like crust and fills it with cured Xuanwei ham (宣威火腿) cut fine and mixed with honey and sugar — sweet and savory at once. Yunnan also makes a sugared rose pastry (鲜花饼) which is sold year-round in its own right rather than being a mooncake as such. Beijing (京式月饼) is known for zilaihong (自来红) and zilaibai (自来白) — "self-reddening" and "self-whitening" — named for the color each bakes to, which follows from their doughs: the first uses sesame oil, the second lard. Both have a dry, crumbly skin and dried-fruit-and-sugar fillings.

Sharing Them

One tin serves a table rather than a person, which is the whole point of the format. Tea is usually alongside — a hot brew of pu-erh or oolong cuts the richness and resets the palate between wedges. Not a fast snack, but something you sit down for.