Lesson 1Water control and ice crystal management: freezing point, glass transition, cryoprotectants, and techniques to minimise ice crystalsGet to grips with water behaviour and controlling ice crystals. This part covers freezing point, glass transition, cryoprotectants, and methods to curb crystal growth, keeping textures smooth during hardening, storage, and when temperatures fluctuate in our Zambian climate.
Freezing curves and phase change in mixesGlass transition and frozen matrix rigidityCryoprotective sugars and polyols in formulasProcess controls to limit crystal growthStorage, temperature cycling, and recrystallizationLesson 2Alternative bases: plant milks, coconut, aquafaba; handling fat and protein differences for vegan frozen dessertsLook at alternative bases for vegan and lactose-free desserts popular in Zambia. You'll compare plant milks, coconut, and aquafaba, adjust for fat and protein shortages, and create recipes that match dairy-like body, stability, and flavour release using local ingredients.
Comparing plant milks for frozen applicationsCoconut fat behavior and flavor managementAquafaba foaming and stabilization propertiesBalancing fat, protein, and solids without dairyFortifying body with fibers and proteinsLesson 3Fat and overrun fundamentals: role of fat in mouthfeel, measuring and targeting overrun, air incorporation controlLearn how fat and air give that nice body and lightness to desserts. This section explains fat's job in lubrication and flavour, overrun mechanics, ways to measure and aim for overrun, and how tools and mix designs manage air in small Zambian kitchens.
Fat globule structure and partial coalescenceFat level, mouthfeel, and flavor deliveryDefining and calculating overrun in practiceEquipment factors affecting air incorporationFormulation tweaks to tune overrun and bodyLesson 4Eggs and custard bases: composition, tempering, pasteurisation, and effect on texture and stabilityStudy eggs and custard bases as building blocks for structure. You'll break down yolk makeup, tempering and pasteurisation steps, and see how egg proteins and emulsifiers affect thickness, smoothness, stability, and flavour in our frozen treats.
Egg composition and functional componentsYolk emulsifiers and fat–water interactionsTempering techniques to avoid curdlingCustard pasteurization and safety targetsEgg proteins and their effect on textureLesson 5Emulsifiers and stabilisers: lecithin, mono/diglycerides, guar, locust bean gum, xanthan — mechanisms, dosages, and labelling considerationsDive into emulsifiers and stabilisers that manage texture and melting. This covers how lecithin, mono- and diglycerides, guar, locust bean gum, and xanthan function, proper amounts to use, and tips for labelling to meet Zambian standards and clean-label preferences.
Emulsion theory in frozen dessert mixesLecithin and mono/diglycerides in fat networksGuar and locust bean gum hydration behaviorXanthan and synergistic gum combinationsDosage ranges, dispersion, and clumping issuesLabeling rules and clean‑label strategiesLesson 6Food safety and allergen management: pasteurisation temps, time/temperature controls, cross-contamination prevention, shelf life basicsPick up key food safety rules for frozen desserts in Zambia. This includes pasteurisation goals, time-temperature checks, clean designs, allergen separation, labelling, and planning shelf life for dairy and non-dairy items to keep everyone safe.
Key pathogens of concern in frozen dessertsPasteurization methods and legal requirementsTime–temperature control and cooling limitsPreventing cross‑contamination in productionAllergen control plans and label declarationsShelf life, storage, and quality monitoringLesson 7Fruit and flavour components: acid, pectin, fibre, volatile aromatics; treating high-water fruits vs. low-water fruitsUnderstand how fruits and flavours act in frozen mixes. You'll compare high-water and low-water fruits available locally, handle acidity, pectin, and fibre, and manage volatile scents to craft balanced, stable fruit-based desserts that shine.
Fruit composition: water, sugar, and acidityManaging pectin, fiber, and fruit textureFormulating with high‑water fruits and puréesUsing low‑water fruits, pastes, and inclusionsProtecting volatile aromatics during freezingLesson 8Milk and dairy chemistry: milkfat, proteins, lactose, emulsifiers and stabilisers and their functional rolesExplore milk and dairy parts that form frozen desserts. You'll examine milkfat, proteins, lactose, minerals, and added emulsifiers and stabilisers, seeing how each impacts body, melting, flavour release, and storage in our warm weather.
Milk composition and typical dairy specificationsMilkfat structure and role in body and richnessCasein and whey proteins in foam and structureLactose, sandiness risk, and crystallization controlDairy emulsifiers and stabilizers in mixesLesson 9Sugar functions: types of sugars, freezing point depression, sweetness balance and syrup calculations (Brix)Break down how sugars shape sweetness, body, and freezing. You'll compare sucrose, glucose, fructose, and invert sugar, work out freezing point drops, and use Brix and solids to design balanced, easy-to-scoop desserts with Zambian flair.
Comparing common sugars and sweetening powerFreezing point depression and hardness controlUsing Brix and refractometers in formulationBalancing sweetness with texture and bodyUsing syrups, honey, and invert sugar blends
