And why it changes everything, from how chocolate tastes to how your cake turns out.
There's a number printed on almost every chocolate bar and every block of baking chocolate. 55%. 65%. 72%. Most people glance at it, assume higher means darker, and move on. But for anyone serious about baking, that number is one of the most important decisions in a recipe and understanding it changes how you think about chocolate entirely.
What the Percentage Actually Means
Cacao percentage tells you how much of the chocolate, by weight, comes from the cocoa bean. That includes two components: cocoa solids (which carry the flavour and bitterness) and cocoa butter (the natural fat that gives chocolate its melt and texture). Everything else like sugar, milk solids, emulsifiers makes up the remainder ingredients.
So a 65% dark chocolate comprises of 65% cocoa solids or butter, and roughly 35% of "other stuff", usually sugar, stabilisers, milk solids, and other additions. For most consumers, a higher percentage means "darker chocolate", which usually translates to more bitterness or cocoa flavour.
How Taste Changes Across the Spectrum
Most everyday chocolate sit at around 50% to 55%. It's sweet, familiar, and mild, or what most people picture when they think "chocolate". The cocoa flavour is present but soft, rounded out by a higher sugar content and balanced with milk solids. It's lighter on the palate, appeals to most taste buds, and not particularly complex.
Between 60 to 70% is where chocolate starts to open up. The sweetness pulls back, and you begin to taste what the cocoa bean actually offers, whether it's the fruity top notes, a subtle depth, or a richness that lingers without being aggressive. This is the range of chocolates that professional pastry chefs and chocolatiers gravitate toward, because there's enough complexity to make a dessert interesting, but enough balance that it doesn't overwhelm.
At 75% and above, we step into very different territory. The bitterness is front-loaded, the sweetness is minimal, and you get an earthy and almost leathery notes that some people love while others find challenging. In baking, this range demands a lot of counterbalancing.
Why Percentage Matters So Much in Baking
Now for a little science...
When you change the chocolate percentage in a recipe, you're not just changing flavour. You're changing the ratio of fat to sugar to dry cocoa solids in your batter. And each of these affects something different.
Cocoa solids absorb moisture. A higher-percentage chocolate has more cocoa solids, which act almost like a dry ingredient so they can soak up liquid in a batter and leave you with a denser, drier result if you don't compensate.
Cocoa butter adds richness and smoothness. It's a type of fat, and it behaves like one. More cocoa butter can mean a silkier ganache or a fudgier brownie but too much and it can makes things greasy or taste unbalanced.
Less sugar built in means less sweetness overall. If a recipe was developed around a 55% chocolate and you swap in a 70%, the finished product will taste noticeably less sweet, even if you didn't change a single other ingredient.
But recipes don't just use cocoa. For example, you can balance a darker chocolate with sugar for more sweetness while not introducing more "moistness" with butter. This also means that you'll have to tweak your butter, milk, or sugar, whenever you use a different percentage of chocolate.
This is why professional recipes almost always specify a chocolate percentage and why swapping chocolates without adjusting the rest of the recipe can quietly ruin something that looked like it should work.
A couple of years ago when our chocolate supplier switched, we had to do many rounds of baking to tweak our recipe even when we used the same percentage chocolate. This was necessary for us to maintain that chocolatey-ness and the moist-ness of our chocolate sponge. We had to revisit the butter ratio, adjust the sugar content, and retest from scratch.
The 60–70% Sweet Spot
For most professional baking or even home baking, 60 to 70% is the range that consistently delivers. Rich without being bitter. Complex without being difficult to work with. And it's fatty enough to give texture and body and works well whether you're making cakes, fudge, ganache, or mousse.
It's also the range where small differences between chocolate brands become more noticeable. A 65% from one producer can taste quite different from a 65% from another, which is why, once you find something that works, you tend to stay with it.
What We Use at TCC and Why
For our chocolate fudge, we use Van Houten Professional 65% dark chocolate, a professional-grade couverture that sits right in the middle of that sweet spot.
Van Houten Professional is part of the Barry Callebaut group, one of the largest cocoa companies in the world. Van Houten Professional is practical for most Singapore-based bakers because of its availability across most bake stores, so you can get it consistently and reliably.
We've also tried lower-percentage chocolates and other brands, and it is difference. The flavour difference was clear. Less depth, less of that velvety finish that makes a proper chocolate fudge feel like something. And 65% gives us that richness and chocolatey-ness without tipping into bitterness.
Choosing your chocolate isn't really a single decision. It's a commitment to how the whole thing fits together. And having quality chocolate makes a world of difference when it comes to making the best chocolate cake in Singapore.
Van Houten Professional is available at most bake supply shops across Singapore. Give it a try on your next bake and let us know how it goes!