Yeasts get things going.
Yeasts use sugars in the pulp and make alcohol and carbon dioxide. They also help break down the pulp around the beans.
Curious minds. Chocolate-covered discoveries.
Eat the
Science.
Tiny microbes. Melting crystals. Big chocolate energy.
Come explore the hidden world inside your favorite treat. Ask questions, push buttons, and follow the flavor.
chocolate starts as a seed.
01 / Fermentation
Small helpers.
Huge flavor.
Before roasting, farmers give pulp-covered cocoa beans time to ferment. Microbes in the pulp help set up the chemistry of chocolate flavor.
Real cocoa / one fermentation batch
The batch warms up.
Lactic acid bacteria and acetic acid bacteria also take part. With oxygen, acetic acid bacteria turn alcohol into acid and release heat. Farmers turn the beans to let more air in.
Flavor is under construction.
Heat and acids trigger changes inside the seed. Enzymes break down materials such as proteins, creating building blocks that help roasting develop chocolate aromas.
The microbes overlap in real life. These drawings are friendly characters, not microscope photographs.
Explore the fermentation research ↗Then: dry + roast
Fermentation prepares the ingredients for flavor. Drying removes moisture; roasting develops familiar chocolate aromas. It takes both the farm and the maker.
ICCO: from beans to chocolate ↗02 / Cocoa butter
The butter
that grows on trees.
Cocoa butter is the natural fat inside cocoa beans. Despite the name, it isn’t dairy butter.
Grind nibs → cocoa liquor
Cocoa liquor is ground cocoa—not an alcoholic drink.
Press it, and get two ingredientsCocoa butter
The fatCocoa cake
Milled into cocoa powder
The fatCocoa cake
Milled into cocoa powder
Try the melt lab
What happens when fat warms up?
Fat can hold its shape.
Solid fat crystals can join into a network. That structure helps cocoa butter—and chocolate—hold a shape.
Some crystals begin to melt.
As it warms, cocoa butter’s balance of solid and liquid fat changes. The network weakens, and the fat softens.
The crystal network melts away.
Once the fat is fully melted, the network is gone. Chocolate’s sugar and cocoa particles are still there, suspended in the melted fat.
A simplified illustration, not a thermometer. Recipe, crystal form, and cooling history affect how chocolate melts.
Big science word: polymorph
Same fat. Different ways to pack its molecules. Cocoa butter is commonly described as having six crystal forms. Their arrangements change how the fat behaves. Tempering helps chocolate makers guide the crystal network in a bar.
Read the cocoa butter crystal study ↗Inside the Kartel lab
Our goal for Conspiracy Chocolate is a smooth, squeezable pecan chocolate spread. Cocoa butter, pecan oil, particles, and temperature all play a part. A chocolate bar and a chocolate spread have different texture goals!
03 / Chocolate chemistry
Same cacao.
Different chocolate.
Choose a chocolate and investigate its typical ingredients. The brown cocoa solids and the pale cocoa butter do different jobs.
The cocoa takes center stage.
Cocoa mass contains brown cocoa solids and cocoa butter. Dark chocolate usually has more cocoa character than milk chocolate.
Milk joins the mix.
Milk chocolate combines cocoa ingredients with milk ingredients and sugar. Changing those proportions changes the flavor and color.
Plot twist: cacao is still here.
White chocolate contains cacao-derived cocoa butter, but no brown, non-fat cocoa solids. That’s why it isn’t brown.
These are typical examples. Actual recipes and extra ingredients vary.
Zoom in / the molecular view
Open full size ↗Your chocolate chemistry field guide.
Reading tip: “0% cocoa solids” in the white chocolate column means no non-fat cocoa solids. Its cocoa butter still comes from cacao. The percentages in this 2016 reference aren’t a rule for every chocolate recipe.
04 / The texture detective
The secret
to a smooth move.
Chocolate isn’t just one liquid. Tiny cocoa and sugar particles sit in its fat. Refining breaks larger particles down, helping reduce that gritty feeling.
Smaller particles also create more surface to coat with fat. So “finer” doesn’t automatically mean “runnier.” The recipe matters.
Explore particle size and chocolate flow ↗Larger particles can feel gritty on your tongue.
A magnified illustration—not a measurement.Your turn / think like a scientist
Got a
sweet hypothesis?
Try these three tiny challenges. A wrong guess is just a chance to discover something.
Three discoveries waiting for you.
For the extra-curious
Follow the evidence.
Keep asking questions. These are the science and craft sources behind the lab.