The Ingredients
Black sesame, pandan, ube, mango, sweet rice, coconut, and tea aren't exotic for the sake of it. These are flavors we grew up with, ingredients that mark celebrations and everyday meals across Asia. For customers who are less familiar, here's a closer look at what makes each one worth knowing.
Black Sesame
Taste: Nutty, rich, and slightly bitter, with a depth that intensifies when toasted. Rounder and more complex than white sesame, with a hint of earthy sweetness that builds as you eat.
How it's used: Ground into pastes, stirred into porridges, folded into ice creams and baked goods. In Japan and Korea, it's a classic rice cake filling and decoration, appearing in mochi and tteok alike. In China, it's the base for tang yuan (sweet rice dumplings) and warm sesame soups.
Where it's prevalent: China, Japan, Korea, Taiwan, and throughout Southeast Asia.
Notable traits: The dark hull is what gives black sesame its stronger aroma, more pronounced flavor, and dramatic color compared to white sesame. When ground or blended, it produces a striking dark grey that's genuinely beautiful in a cake crumb.
Why Square Cakes uses it: Black sesame rewards attention. It isn't sweet upfront; it builds. The slight bitterness balances the delicate sweetness of the cake, and that deep color makes for a striking slice.
Pandan
Taste: Floral, sweet, and gently grassy, often described as a combination of vanilla, almond, and coconut with a subtle earthiness. Think of it as vanilla's tropical cousin.
How it's used: The long green leaves are blended or juiced for their extract, used to flavor rice, cakes, custards, and jellies. It doubles as a natural food dye, producing a vivid emerald green.
Where it's prevalent: Indonesia, Malaysia, Thailand, the Philippines, Singapore, and Vietnam.
Notable traits: Pandan shares the same aromatic compound found in jasmine rice and basmati, which is part of why it feels both familiar and surprising. It's sometimes called "the vanilla of Southeast Asia." The color is completely natural.
Why Square Cakes uses it: Pandan has a warmth and fragrance that's hard to replicate. It's floral without being herbal, and that natural green color is genuinely beautiful. As a flavor deeply tied to Filipino and Southeast Asian kitchens, it also feels personal.
Ube
Taste: Mildly sweet, with notes of vanilla, hazelnut, and a faint coconut-like creaminess. Subtle and aromatic rather than bold or starchy.
How it's used: Boiled and mashed into ube halaya (a sweet purple jam), folded into ice cream, baked into cakes and breads. It's a centerpiece of Filipino dessert culture, appearing in everything from pandesal to halo-halo.
Where it's prevalent: The Philippines, where it's been eaten for centuries and remains a deeply beloved national ingredient. Also used across Southeast Asia.
Notable traits: Ube's vivid purple-violet color is entirely natural, coming from anthocyanins in the yam. The finest ube comes from Pangasinan province, where volcanic soil and tropical climate produce roots with the deepest color and richest flavor. It pairs beautifully with coconut, pandan, and vanilla.
Why Square Cakes uses it: Ube is personal. As a baker married into a Filipino family, this ingredient carries real meaning. It's also genuinely delicious: gentle enough to let the cake's texture shine while still being distinctly itself.
Mango
Taste: Sweet, bright, and tropical, with a silky, almost buttery texture when ripe. Manila and Ataulfo varieties (the ones favored for baking) have very little acidity and no fibrous texture, making them closer to a dessert fruit than a snack fruit.
How it's used: Fresh, pureed, layered into desserts, or folded into creams and fillings. A staple in Filipino sweets like mango float and mango royale, and central to mango sticky rice across Southeast Asia.
Where it's prevalent: The Philippines (home of the Carabao mango, recognized as the world's sweetest), Thailand, India, and Mexico.
Notable traits: The Manila mango (also sold as Ataulfo or "honey mango") is small, golden yellow, and far sweeter and creamier than the large Tommy Atkins variety common in American grocery stores. The difference is significant.
Why Square Cakes uses it: Mango needs almost nothing done to it to taste extraordinary. In a cake, it brings freshness and brightness that cuts through richness. It's also a flavor that connects people to memory, to summer, to celebration.
Sweet Rice
Taste: Subtly sweet, milky, and neutral on its own. The real gift is texture: a gentle chewiness and soft elasticity that's deeply satisfying in a way that's hard to pin down until you've experienced it.
How it's used: Ground into sweet rice flour (mochiko) for mochi, dango, and other chewy confections. In baking, it's added to cake batter to introduce a tender, slightly elastic quality to the crumb. A staple across Japanese, Korean, Chinese, and Filipino dessert traditions.
Where it's prevalent: Japan, Korea, China, the Philippines, Thailand, and Vietnam.
Notable traits: Unlike regular rice flour, sweet rice flour is made from glutinous rice with almost no amylose (the starch that makes rice fluffy and separate). Instead, it's high in amylopectin, which creates that signature chew. Note: the name "sweet rice" refers to its use in sweet preparations, not its flavor on its own.
Why Square Cakes uses it: A small amount of sweet rice flour changes how a cake feels. It gives the crumb a subtle chewiness that lingers, a texture that's distinctly Asian in spirit and deeply satisfying.
Coconut
Taste: Mildly sweet, creamy, and gently nutty, with a soft tropical warmth. The flavor shifts depending on the form: coconut milk is light and subtly rich, coconut cream is thicker and more luscious, and toasted coconut turns deeply aromatic and sweet with a pleasant chew.
How it's used: Coconut milk and cream are essential to curries, puddings, and steamed cakes across Southeast Asia. In baking, they add moisture and a rounded richness that's hard to achieve with dairy alone. Shredded coconut adds texture; toasted coconut adds aroma and crunch.
Where it's prevalent: The Philippines, Thailand, Indonesia, Malaysia, India, and across the Pacific. Coconut is so embedded in Southeast Asian cooking that it appears in everything from breakfast rice to evening desserts.
Notable traits: Coconut works in layers. In a cake, it can be present without being obvious, lending creaminess and depth rather than announcing itself. It also loves other tropical flavors, pairing naturally with mango, pandan, and ube.
Why Square Cakes uses it: Coconut shows up in three of our cakes because it quietly makes everything better. In the mango cake it adds creaminess, in the pandan shortbread it gives richness and texture, and in the butter mochi it's essential to that chewy, dense character the cake is known for.
Tea
We use three types of teas, each with a distinct character and season. Together they represent something we love about Asian tea culture: the idea that tea is a flavor as much as a drink, and that the right one can transform a cake entirely.
Matcha
Taste: Earthy, grassy, and gently bitter, with a smooth umami undertone and a lingering sweetness at the finish. Complex and layered in a way few other flavors are.
How it's used: Whisked into drinks, stirred into cake batters, folded into creams and ganaches. Central to Japanese sweets (wagashi), including matcha mochi, castella, and roll cakes.
Where it's prevalent: Japan, particularly the Uji region in Kyoto, which produces some of the most prized matcha in the world. Widely used in Korea, Taiwan, and China as well.
Notable traits: Matcha is made from shade-grown tea leaves ground into a fine powder. The shading process, done four weeks before harvest, triggers the plant to produce more chlorophyll (creating that deep green color) and L-theanine, an amino acid responsible for the characteristic umami depth. Quality matters: culinary grade matcha is used in baking.
Why Square Cakes uses it: Matcha is one of the few flavors that is simultaneously bitter, sweet, and savory. In a cake, that complexity means it never tastes flat. It pairs especially well with black sesame, and the deep natural green color is striking in every layer.
Hojicha
Taste: Warm, toasty, and smooth, with notes of caramel, roasted nuts, and a faint smokiness. The gentlest of the three teas: no bitterness, no astringency, just a clean roasted warmth.
How it's used: Brewed as a daily tea in Japan, often served after meals. In baking, it's used as a powder stirred into batters, creams, and icings. It pairs well with warm spices, white chocolate, and dairy.
Where it's prevalent: Japan, where it was created in Kyoto in the 1920s as a way to make use of second and third harvest tea leaves by roasting them at high heat.
Notable traits: The roasting process breaks down the catechins and tannins that make green tea sharp, which is why hojicha is the mildest, most approachable tea for people who find matcha intense. It also has very low caffeine. When baked, the roasted flavor deepens rather than turning bitter, making it more forgiving than matcha in the oven.
Why Square Cakes uses it: Hojicha brings a cozy, autumnal quality to a cake. It's comforting in the way roasted things tend to be, and its caramel undertones make it feel warm and familiar even to people who've never tried it.
Yuja-Ginger (Korean Citron Tea)
Taste: Bright, citrusy, and bittersweet, with a floral depth and a warm ginger finish. Often described as a cross between orange and grapefruit, with the sweetness of mandarin and the tartness of grapefruit. Complex and intensely aromatic.
How it's used: In Korea, yuja (yuzu) is preserved with honey and ginger to make a marmalade-like concentrate called yujacha, which is stirred into hot water as a tea. In baking, the preserve or zest adds a punchy citrus note that cuts through richness beautifully.
Where it's prevalent: Korea, where yujacha has been a winter staple for centuries, traditionally drunk to soothe sore throats and warm up during cold months. The yuja fruit (similar to Japanese yuzu) also grows in Japan and parts of China.
Notable traits: Yuja tea is made with the whole fruit, including the peel, which is packed with essential oils that create its distinctive fragrance. It is caffeine-free, high in Vitamin C, and deeply associated with winter comfort and home in Korean culture.
Why Square Cakes uses it: This one is personal. Yuja-ginger tea is the kind of thing you make when someone in the family is sick, or when it's cold outside and you want something warming. Translating that feeling into a cake felt right. The citrus brightness and ginger warmth make it a natural for winter, and it's unlike anything most customers have tasted in a baked good.
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