The science of dips, toppings and fillings explained:
- Toppings, fillings and dips must be considered during development because they can alter the strength, texture and shelf life of the core product.
- Curvature, thickness and ridges can improve dipping performance, but greater strength mustn’t compromise the eating experience.
- Matching water activity helps prevent fillings, coatings and other add-ons from softening crisp bakery and snack components.
Few snacking failures are as immediate as the mid-dip break. The crisp snaps under the weight of the sauce, half disappears into the bowl and the consumer must decide whether to retrieve it or abandon it. It’s a small frustration, but Pringles believes it’s significant enough to warrant redesigning one of the world’s most recognisable snacks.
Launching across the US in September, Pringles Dippers is the brand’s thickest, sturdiest and waviest crisp to date. It retains the familiar curved Pringles profile but strengthens it with a more robust, scoop-like construction intended to handle everything from a cautious dab to what the company describes as a ‘heavy scoop’.
The range will arrive in Original, French Onion and Bacon Cheddar flavours. Original offers a relatively neutral base for consumers’ chosen dips, while the other two demonstrate how the carrier and sauce can create a more complex flavour combination.
It might sound like an entertaining piece of product development, but it captures the bigger opportunity behind toppings, fillings and add-ons. These extras allow manufacturers to introduce flavour, texture, visual impact and consumer interaction without abandoning a familiar base. However, they can’t simply be applied at the end of development. Whether it’s a dip-loaded crisp, cream-filled croissant, sprinkled snack bar or glazed biscuit, the addition can change the strength, moisture balance, shelf life and eating mechanics of everything beneath it.
A crisp is a piece of edible engineering
The challenge for Pringles Dippers was to carry more weight without losing the crispness and recognisable shape consumers associate with the brand.
“We know it can be frustrating if your typical salty dipping vessel prevents your perfect scoop or breaks as you dip, which is why we’ve created Pringles Dippers,” said Eileen Flaherty-Yao, senior director of Salty at Mars Snacking North America. “Our iconic parabolic shape is now thicker and wavier than ever – built to handle any dipping style from light dips to heavy scoops.”
Dippers reverses the usual development sequence. Rather than creating a snack and leaving consumers to decide what to put on it, Pringles has modified an established product around the dip itself. The sauce provides customisation and sensory contrast, while the redesigned crisp ensures the combination works.
Thickness is the most obvious way to increase strength, but it isn’t the only factor. Curvature, ridges, porosity, moisture content and the way force travels through the crisp all influence whether it reaches the consumer’s mouth intact.
A curved crisp can distribute pressure more effectively than a flat one, while waves and ridges provide reinforcement and create pockets that capture sauce. However, a deeper scoop holds more dip and therefore adds more weight.
There’s a sensory compromise to manage, too. A carrier thick enough to survive almost any dip may feel hard, dense or tiring to eat. The manufacturer isn’t chasing maximum strength but the point at which the product supports the intended load while still producing the light, brittle fracture consumers recognise as crispness.
A recent systematic review of potato crisp rheology– the study of how materials flow and deform – describes crisps as exhibiting brittle fracture behaviour, with properties including thickness, moisture, porosity and processing conditions influencing how they break. Instrumental tests can measure fracture force, but developers must still relate that figure to enjoyment. The strongest crisp isn’t necessarily the best one.
The dip must know when to let go
The dip presents its own engineering challenge. It needs to be soft enough to accept the crisp without breaking it yet structured enough to remain attached when lifted.
This is where rheology becomes important. Many dips don’t behave like water. They become easier to move when stirred or scooped, then thicken again when the force is removed.
The ideal dip yields as the crisp enters, forms an even coating and recovers quickly enough to prevent dripping. If it resists too strongly, it can snap the carrier. If it’s too fluid, it runs back into the bowl. If it’s thick but lacks adhesion, it may slide off in one piece.
According to the Centre for Industrial Rheology, ‘cling’ depends on several interacting properties, including the force needed to make a sauce flow, its viscosity at rest, its ability to form a film and the speed at which it rebuilds its structure.
The formulation becomes even more challenging when a dip contains chunks of avocado, onion or cheese. A crisp might penetrate the smooth sauce easily but fail when asked to lift the heavier pieces. Developers therefore need to test the complete formulation rather than relying on measurements taken from its base.
Moisture starts destroying the crunch immediately
Once the crisp enters the dip, the contrast that makes the combination appealing also begins to destroy it. Moisture moves from the wetter sauce into the dry carrier, softening its structure.
When the consumer assembles the combination, the carrier may only need to remain crisp for a few seconds. In a filled or pre-topped bakery product, manufacturers could be asking contrasting components to coexist for months.
Bakers face the same problem with filled croissants, iced doughnuts, layered bars, cream-filled biscuits and topped crackers. In every case, the components must work together without prematurely changing one another.
A moist fruit filling can soften pastry. A dry biscuit can draw moisture from a cream, leaving the shell less crisp and the filling firmer. Sprinkles and crunchy inclusions can lose their texture against a wet glaze.
The critical measurement isn’t simply moisture content but water activity – an indication of how available the water is to move or support microbial growth. According to food engineer Dr Brady Carter, writing in guidance published by laboratory instrumentation specialist Neutec Group, moisture moves from components with higher water activity towards those with lower water activity. Matching the water activity of different components can therefore reduce migration even when their overall moisture contents differ.
More impact without reinventing the base
Toppings, fillings and dips allow manufacturers to take one established dough, crisp, cracker, biscuit or bar in several directions. Changing what goes inside, on top or alongside it can create new flavour combinations, seasonal editions and premium price points without requiring an entirely new format.
However, the apparent simplicity can disguise considerable technical work. Too much filling can destabilise pastry or leak during baking, while toppings may detach during packing and transport. A deeper dip can appear more generous but place greater stress on its carrier. Every addition has to perform alongside the base as well as delivering the intended flavour and visual impact.
Add-ons can also give consumers a greater role in shaping the experience. A separate dip lets them control how much flavour is applied to each bite. A filling introduces contrast and surprise, while toppings can make a familiar format more visually distinctive and social-media friendly. The value doesn’t come simply from providing more ingredients but from giving consumers more ways to experience them.
That means the base and its addition must be developed together. The carrier needs the right strength, shape and surface. A filling must remain where it’s deposited without undermining the surrounding crumb or pastry. A topping needs sufficient adhesion, while a dip requires the right flow and cling.
Pringles Dippers turns a familiar annoyance into a broader product-development lesson. The topping, filling or sauce might appear to be the final flourish, but it can’t be the final consideration. Increasingly, the add-on is the element around which the entire product must be engineered.
Study:
Adeli Mosabbeb A, Majdi N, Hasibi K, Farhoodi M. A Systematic Review of the Factors Affecting the Rheological and Sensory Properties of Potato Chips. J Texture Stud. 2026 Feb;57(1):e70055. https://doi.org/10.1111/jtxs.70055. PMID: 41456926.
