Large syrup companies avoid many whole ingredients for a simple reason: they make the product harder to manufacture. Sugar, water and liquid flavoring dissolve cleanly, move easily through industrial equipment and remain uniform with very little intervention. Nut butters, pralines, purées, vanilla beans, cacao, malt and whole spices do not.

Those ingredients bring the flavor Bon Brun is built around, but they also bring natural oils, starches and fine solids. Once they enter a water-based syrup, gravity begins pulling the recipe apart. Fat rises. Heavier particles sink. Fine solids gather together. Shaking the bottle can temporarily remix them, but it does not create lasting stability.

The easier industrial answer is to replace those ingredients with extracts and flavor concentrates. Bon Brun takes the opposite approach. We keep the pecan butter, hazelnut praline, chestnut purée, vanilla bean, cacao, malt and spices, then solve the physical problems they create.

Six of Bon Brun’s nine syrups use a three-part system to keep those ingredients evenly dispersed: organic sunflower lecithin, gum acacia 500I and high-acyl gellan gum.

They are not three names for the same job. Each solves a different part of the problem.

 

First, the Fat Droplets Have to Become Smaller

Oil and water resist each other. Stirring may break the oil into droplets for a moment, but those droplets naturally collide, reconnect and form a visible layer.

We use immersion blending while the syrup is hot to break the oils from nut butters and pralines into much smaller droplets. The smaller the droplets, the more evenly they can be distributed through the syrup.

Blending alone is not enough. Without protection, the droplets eventually merge again. That is where sunflower lecithin and gum acacia begin working.

 

What Is Sunflower Lecithin?

Lecithin is a naturally occurring fatty substance found in plants and animals. The version used by Bon Brun is derived from sunflower.

Its structure makes it unusually useful in food. One end of a lecithin molecule is attracted to water. The other is attracted to fat. When lecithin is blended into the syrup, the fat-loving side attaches to the oil droplet while the water-loving side faces the surrounding syrup.

It creates a bridge between two ingredients that would otherwise prefer to separate.

The organic sunflower lecithin used by Bon Brun is supplied by Farbest Brands. It is USDA-certified organic, EU-certified organic, Non-GMO Project Verified, vegan, gluten-free, kosher and halal.

We chose sunflower rather than soy lecithin because it performs the same essential function without introducing soy. It also supports the cleaner, more transparent ingredient system we wanted for the recipes.

Sunflower lecithin does not create the small droplets. The immersion blender does that. Lecithin coats those droplets and helps stop them from joining back together.

 

What Is Gum Acacia?

Gum acacia sounds technical, but the ingredient itself is remarkably simple: dried sap harvested from acacia trees, primarily in the dry regions of Senegal and neighboring parts of Africa.

It is also called gum arabic. It has been used in food, beverages and confectionery for centuries because it dissolves easily in water and helps keep oils and fine particles dispersed.

Bon Brun uses Gum Acacia 500I supplied by Farbest and produced by Alland & Robert, a French company with a long history of working with gum acacia. That French origin also fits naturally into a product built around French praline, chestnut, chicory and sea salt.

The 500I grade is designed specifically for strong emulsification. It is instantized, spray-dried, odorless and tasteless, so it can stabilize the syrup without introducing a new flavor.

Gum acacia surrounds the dispersed oil droplets with another protective layer. Lecithin helps fat and water meet. Gum acacia makes it harder for the droplets to find each other and reconnect.

It can also contribute a small amount of body without making the syrup thick, gummy or sticky.

 

What Is High-Acyl Gellan Gum?

Lecithin and gum acacia address the oils, but real ingredients create another problem: solid particles.

Vanilla seeds, malt sediment, cacao, spices and fragments of purée can still sink even when the oils remain emulsified.

High-acyl gellan gum is a fermentation-derived ingredient used to create a very light supporting structure inside a liquid. At the small amounts used by Bon Brun, it does not turn the syrup into a gel. The syrup still pours normally.

Instead, it forms a soft, nearly invisible network through the bottle. That network slows the movement of fine particles, making it harder for gravity to pull them into a dense layer at the bottom.

The effect is closer to a fine internal scaffold than a traditional thickener.

Bon Brun uses high-acyl gellan from Modernist Pantry because it creates a softer, more fluid structure than low-acyl gellan. It helps suspend natural particulates without giving the syrup the rigid or jelly-like character associated with stronger gels.

 

Why We Use All Three

The full system is easier to understand when each ingredient is assigned one clear responsibility.

The immersion blender shrinks the fat droplets.

Sunflower lecithin bonds with both fat and water, helping those droplets remain dispersed.

Gum acacia reinforces the emulsion and helps protect the droplets from reconnecting.

High-acyl gellan slows the movement of fine solids so they do not sink into a concentrated layer.

Together, they keep the recipe closer to the state it was in when it left the kettle.

Without lecithin, the natural oils can collect at the top.

Without gum acacia, the emulsion has less protection over time.

Without gellan, the oils may remain dispersed while vanilla seeds, cacao or malt still settle to the bottom.

A stable syrup should not begin thin and end with a concentrated sludge of pecan butter, praline or spices. Every pour should contain the same balance of ingredients.

 

Why We Did Not Use Xanthan Gum

Xanthan gum was one of the first stabilizers tested.

It worked in the narrowest technical sense. It thickened the syrup and slowed separation. But it also changed the pour.

Instead of flowing cleanly from the bottle, the syrup became stringy and sticky. It stretched between the bottle and the cup, clung to the cap and created the texture of conventional pancake syrup.

It solved one problem by creating another.

Bon Brun is designed for espresso, where the syrup needs enough body to feel luxurious but still disperse quickly into a small volume of coffee. Xanthan made the product feel heavier, cheaper and messier than the ingredients deserved.

High-acyl gellan gave us a better result. It supports particles without turning the entire syrup into a rope.

 

Why We Avoided Synthetic Emulsifiers

The food industry has many effective synthetic emulsifiers, including DATEM and polysorbate 80. They are useful in products designed for enormous production runs, long distribution chains and highly standardized processing.

They were not necessary for Bon Brun.

Sunflower lecithin, gum acacia and gellan gum gave us the stability we needed while remaining compatible with the real culinary ingredients in the recipes. They are functional ingredients, but they are not flavor disguises or industrial shortcuts.

Sunflower lecithin comes from sunflower.

Gum acacia is tree sap.

Gellan is produced through fermentation.

Each is used in a very small amount for a specific physical reason.

That is our standard for a clean formulation. An ingredient does not need to sound familiar enough for a pantry shelf. It needs to have a clear purpose, a reliable source and a reason to be in the bottle.

 

Why Stability Matters Beyond Appearance

Separation is not merely cosmetic.

When oils or plant solids collect at the surface, they receive more direct exposure to the oxygen in the bottle’s headspace. Oils and delicate flavor compounds can oxidize faster when concentrated in a floating layer.

Keeping the ingredients evenly dispersed helps prevent that vulnerable layer from forming. It also supports a more consistent relationship between the syrup’s sugar, acid, preservative and natural ingredients.

Emulsifiers and stabilizers do not make a product shelf stable on their own. Sugar concentration, acidity, heat processing, sanitation, packaging and preservation all remain essential.

Their role is physical stability: keeping the ingredients distributed so the complete formula can behave as intended.

 

Why the Process Has to Be Done Hot

These ingredients are not added to the kettle and left to solve the problem themselves.

The nut butter, praline or purée must first be dispersed into hot syrup. Active immersion blending reduces the fat into small droplets and creates enough new surface area for the emulsifiers to coat.

The powders must also be introduced carefully. Added too quickly, they can form stubborn clumps. Added at the wrong temperature, they may not hydrate or disperse correctly.

The sequence matters:

The fat-based ingredient is loosened with hot syrup.

The mixture is immersion blended to reduce droplet size.

Sunflower lecithin and gum acacia stabilize the newly dispersed fat.

High-acyl gellan is fully hydrated and distributed before the syrup cools.

This is not impossible at industrial scale. Large manufacturers have equipment capable of producing extremely stable emulsions. The problem is that conventional copacking is designed around simpler formulas that can be poured into a tank and mixed.

Toasting malt, steeping whole ingredients, filtering natural sediment, incorporating nut pastes and actively blending each formula requires a more involved process. Scaling it without changing the syrup would require production designed around the recipe, not a recipe redesigned around the factory.

That distinction matters.  The ingredients make Bon Brun possible. The process makes them work.

 

Frequently Asked Questions

Why does homemade coffee syrup separate?

Coffee syrup separates when it contains oils, nut butters, purées or fine particles that do not dissolve in water. Fat rises while heavier solids sink. Blending may mix them temporarily, but emulsifiers and stabilizers are needed to keep them evenly dispersed.

How do you keep nut butter from separating in coffee syrup?

The nut butter must first be broken into small droplets through high-shear blending. Sunflower lecithin can then help the fat remain dispersed in the water-based syrup, while gum acacia provides additional protection around the droplets.

What is gum acacia made from?

Gum acacia, also called gum arabic, is dried sap collected from acacia trees, primarily in Senegal and surrounding regions of Africa. It is used in beverages as a natural emulsifier and stabilizer.

What is the difference between lecithin and gellan gum?

Lecithin helps fat and water stay mixed by coating oil droplets. Gellan gum creates a light internal structure that slows the movement of solid particles. One stabilizes the emulsion; the other helps prevent sediment from sinking.

Why does xanthan gum make syrup stringy?

Xanthan gum creates high viscosity even at low concentrations. In syrup, that can produce a sticky, elastic pour that stretches from the bottle and clings to the cap. It may reduce separation, but it can also make the syrup feel more like pancake syrup.

Are sunflower lecithin and gum acacia natural ingredients?

Yes. Sunflower lecithin is derived from sunflower, while gum acacia is dried tree sap. Both are used to stabilize ingredients that would otherwise separate in water-based foods and beverages.