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Chilled desserts set through three physical mechanisms: raw berry coulis balances 100g of berries with 20g icing sugar and 3mL lemon juice; lemon posset sets via acid-induced casein coagulation using an 8 : 2 : 1 ratio (600mL double cream [48% butterfat] boiled with 150g caster sugar and whisked with 75mL lemon juice for 6 ramekins); and no-bake UK cheesecakes firm up at 4°C by combining 500g full-fat cream cheese with 300mL whipped double cream over a 2 : 1 biscuit-to-butter crust.
Worked Example: To prepare ~490mL (535g strained) of raspberry or strawberry coulis for 8 dessert portions, blend 500g hulled berries with 100g sifted icing sugar and 15mL fresh lemon juice for 60 seconds, then press through a fine nylon mesh sieve to remove 75g–80g of seeds and chill at 4°C.
| Chilled Dessert | Primary Base (6 Servings) | Sweetener & Acid | Physical Setting Mechanism | Chill Time at 4°C |
|---|---|---|---|---|
| Strained Strawberry / Raspberry Coulis | 500g ripe berries (~535g strained yield) | 100g Icing Sugar + 15mL Lemon Juice | Natural fruit pectin & dissolved sugar viscosity | 1 hour chill (stores 4–5 days) |
| Lemon / Passionfruit Posset (8:2:1) | 600mL double cream (48% fat) | 150g Caster Sugar + 75mL Lemon Juice | Citric acid pH <4.6 coagulates casein micelles | 3–4 hours in 125mL ramekins |
| No-Bake Berry Cheesecake (8-Inch) | 500g cream cheese + 300mL double cream | 115g Icing Sugar + 15mL Lemon Juice | Milkfat crystallization over 250g crumb + 125g butter | 5–6 hours in 20cm springform |
| 70% Dark Chocolate Mousse | 250g 70% dark chocolate + 150mL cream | 4 Large Eggs (separated) + 60g Sugar | Cocoa butter crystal network + whipped egg foam | 3–4 hours in glasses |
| Layered Fruit & Custard Trifle | 200g sponge + 400g fruit in jelly | 500mL egg custard + 300mL whipped cream | Starch-yolk custard gel over set fruit gelatin | 4–8 hours in glass bowl |
No-bake chilled desserts solidify at refrigerator temperatures (4°C / 39°F) through three distinct physical pathways rather than oven egg coagulation. Raw berry coulis thickens via natural fruit pectin and dissolved icing sugar viscosity; traditional British lemon posset sets when citric acid drops the pH of boiled double cream toward the 4.6 isoelectric point of casein micelles; and no-bake cheesecake sets when whipped milkfat and cocoa butter crystallize into a rigid lattice.
Because there is no baking step to evaporate excess liquid, weighing berries, sugar, lemon juice, and cream on a digital gram scale is the key to ensuring every ramekin or springform tin sets cleanly.
A foolproof lemon, lime, or passionfruit posset follows an 8 : 2 : 1 volume-to-weight ratio per 6 ramekins: 600mL British double cream (48% butterfat, or US heavy whipping cream at 36%–40% fat boiled slightly longer), 150g caster sugar, and 75mL strained fresh lemon juice.
Bring the double cream and caster sugar to a gentle boil for 3 minutes so water evaporates and sugar dissolves, remove from the heat, whisk in the 75mL lemon juice thoroughly, cool 10 minutes, and pour into six 125mL glasses to chill for 3 to 4 hours at 4°C. Never substitute low-fat single cream or half-and-half, which lacks the fat globule density needed to bridge the acid-coagulated casein network and will separate into curds and whey.
For glossy strawberry, raspberry, or blackberry coulis that ribbons across cheesecake or pavlova without running watery, blend 100% hulled ripe berries (500g) with 20% sifted icing (confectioners') sugar (100g) and 3% fresh lemon juice (15mL) for 60 seconds in a high-speed blender.
Pressing that 615g raw puree through a fine nylon mesh sieve removes 75g to 80g of woody berry seeds (about 13% mass loss), yielding ~535g (~490mL) of smooth coulis—enough to dress 8 to 10 dessert plates at 50mL per portion.
To build an 8-inch (20cm) springform no-bake cheesecake base that cuts cleanly without crumbling or sticking to the tin, crush 250g digestive biscuits (or graham crackers) to fine sand and bind with 125g melted unsalted butter (a 2 : 1 crumb-to-butter weight ratio), pressing firmly into the lined base and chilling 30 minutes before topping with 500g full-fat room-temperature cream cheese beaten with 115g icing sugar, 15mL lemon juice, and 300mL whipped double cream.
For airy dark chocolate mousse without gelatin, melt 250g of 70% cocoa-solids chocolate (cooled to 42°C) into 4 egg yolks and 150mL softly whipped cream, then fold in 4 egg whites whipped to soft peaks with 60g caster sugar in three gentle stages.
To release an 8-inch no-bake strawberry or mango cheesecake cleanly from its springform ring after chilling for 6 hours at 4°C, wrap a warm damp kitchen towel around the outside metal collar for 20 seconds or run a thin palette knife dipped in hot water around the inside wall before unclasping the latch. Keep fresh berry coulis in a squeeze bottle at 4°C for up to 5 days, or freeze in ice-cube trays for single dessert portions.
These 8:2:1 lemon posset ratios, coulis sugar percentages, and mousse formulas are independent pastry chemistry guides and carry no endorsement from any celebrity baker.
For 6 ramekins, boil 600mL double cream (48% butterfat) with 150g caster sugar for 3 minutes, remove from the heat, and whisk in 75mL fresh strained lemon juice—an 8 : 2 : 1 ratio (100mL cream : 25g sugar : 12.5mL lemon juice per serving) that sets in 3–4 hours at 4°C.
Citric acid coagulates casein proteins at pH < 4.6, and the high fat-globule density of double cream (38%–48% butterfat) bridges those proteins into a smooth custard; low-fat single cream lacks enough fat globules and curdles into watery whey.
Blend 500g hulled ripe berries with 100g sifted icing sugar (20%) and 15mL lemon juice (3%); pressing that 615g mixture through a fine nylon sieve removes 75g–80g of seeds, leaving ~535g (~490mL) of seedless coulis for 8 to 10 servings.
Use a 2 : 1 weight ratio of crushed digestive biscuits or graham crackers (250g) to melted unsalted butter (125g) pressed into a lined 20cm (8-inch) springform tin and chilled 30 minutes before adding the 500g cream cheese + 300mL whipped double cream filling.
Cocoa butter inside 250g of 70% dark chocolate re-crystallizes at 4°C to form a firm structural network around 4 separated eggs and 150mL softly whipped cream; using low-cocoa sweet chocolate (<50%) leaves the mousse too soft unless cream is reduced.
No—all chilled dessert ratios and dairy-setting guides in this calculator are independent pastry science formulations based on USDA and UK dairy standards, unaffiliated with any celebrity baker.
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