Lesson 1Water control and ice crystal management: freezing point, glass transition, cryoprotectants, and techniques to minimize ice crystalsLearn to handle water and control ice crystals in frozen desserts. This part discusses freezing point, glass transition, cryoprotectants, and methods to reduce crystal growth, keeping smooth texture even during storage and temperature changes in Eritrean climates.
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 plant-based options for vegan and lactose-free desserts suitable for Eritrea. Compare plant milks, coconut, and aquafaba, adjust for fat and protein needs, and create recipes that match dairy texture, stability, and flavour release using local ingredients.
Comparing plant milks for frozen applicationsCoconut fat behaviour and flavour managementAquafaba foaming and stabilisation propertiesBalancing fat, protein, and solids without dairyFortifying body with fibres and proteinsLesson 3Fat and overrun fundamentals: role of fat in mouthfeel, measuring and targeting overrun, air incorporation controlUnderstand how fat and air give body and lightness to frozen desserts. This covers fat's part in smooth feel and flavour, overrun basics, ways to measure and aim for it, and how tools and recipes manage air in small Eritrean kitchens.
Fat globule structure and partial coalescenceFat level, mouthfeel, and flavour deliveryDefining and calculating overrun in practiceEquipment factors affecting air incorporationFormulation tweaks to tune overrun and bodyLesson 4Eggs and custard bases: composition, tempering, pasteurization, and effect on texture and stabilityExamine eggs and custard as building blocks for structure in frozen desserts. Analyse yolk makeup, tempering and heating steps, and how egg proteins and mixers affect thickness, smoothness, stability, and taste in Eritrean-style 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 stabilizers: lecithin, mono/diglycerides, guar, locust bean gum, xanthan — mechanisms, dosages, and labelling considerationsExplore mixers and thickeners that shape texture and melting in frozen desserts. Learn how lecithin, mono- and diglycerides, guar, locust bean gum, and xanthan function, proper amounts, and ways to label for clean, natural appeal in Eritrea.
Emulsion theory in frozen dessert mixesLecithin and mono/diglycerides in fat networksGuar and locust bean gum hydration behaviourXanthan and synergistic gum combinationsDosage ranges, dispersion, and clumping issuesLabelling rules and clean-label strategiesLesson 6Food safety and allergen management: pasteurization temps, time/temperature controls, cross-contamination prevention, shelf life basicsGrasp key safety rules for frozen desserts in Eritrean settings. Cover heating targets, time-temperature checks, clean design, allergen separation, labelling, and shelf life for dairy and non-dairy items to ensure safe, fresh products.
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 fruitsSee how fruits and flavours act in frozen mixes. Compare watery and dry fruits common in Eritrea, handle acid, pectin, fibre, and scents to make balanced, stable fruit desserts that highlight local produce.
Fruit composition: water, sugar, and acidityManaging pectin, fibre, 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 stabilizers and their functional rolesDelve into milk and dairy parts that form frozen desserts. Study milkfat, proteins, lactose, minerals, and added mixers and thickeners, seeing how they impact body, melting, flavour, and storage in Eritrean dairy traditions.
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)Examine how sugars affect taste, body, and freezing in desserts. Compare sucrose, glucose, fructose, and invert types, calculate freezing drop, and use Brix tools for balanced, easy-to-scoop treats using Eritrean sweeteners.
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
