Avocado Mousse — silky chocolate mousse with no cream or eggs

i. Origin & history

The avocado (Persea americana) is native to Mexico and Central America, where it has been eaten for thousands of years; its name comes, via Spanish aguacate, from the Nahuatl āhuacatl. In much of the Americas and Europe it is treated as a savoury ingredient, but in many places it is just as often a sweet one.

In Brazil, creme de abacate — avocado blended with sugar, lime and sometimes milk — is a classic dessert, and avocado smoothies are everyday drinks. In the Philippines, ripe avocado is mashed with sugar and milk, frozen into ice cream or added to shaved ice. In Indonesia, jus alpukat is a thick avocado shake often streaked with chocolate syrup or chocolate condensed milk inside the glass — an old pairing of avocado and chocolate. Vietnam's sinh tố bơ is a sweet avocado smoothie made with condensed milk.

The chocolate avocado mousse as it is known in North America came out of the raw-food and vegan movements of the late 1990s and 2000s, which looked for whole-food replacements for cream, butter and eggs. Avocado, with its high fat content and buttery texture, turned out to make a remarkably convincing chocolate mousse. Through cookbooks, health-food cafés and food blogs it became one of the best-known 'healthy dessert' recipes of the 2010s.

It is not a mousse in the classical French sense, which is aerated with whipped egg whites or cream, as in a white chocolate mousse or hazelnut mousse. It is closer to a dense chocolate pot or pudding, silky rather than airy — but the name has stuck.

ii. Why avocado works in place of cream

A ripe avocado is around 15 per cent fat, much of it monounsaturated, held in a smooth, creamy flesh with relatively little fibre. Blended thoroughly, that fat is dispersed into tiny droplets in the fruit's water, forming a natural emulsion much like whipped cream or mayonnaise. That is what gives the mousse its rich, coating mouthfeel without any dairy.

Cocoa and chocolate do the rest. Cocoa powder brings intense flavour and dark colour, masking the avocado's green hue and its mild, grassy taste. Melted dark chocolate adds cocoa butter, which is solid at fridge temperature, so the mousse firms as it chills into something spoonable and set rather than a purée. Using both — powder for depth, bar chocolate for body — gives the best result.

The avocado has to be properly ripe: it should yield easily to gentle pressure, with flesh that is buttery and bright green. Under-ripe avocado tastes grassy and blends into a gritty, grainy texture; over-ripe fruit with brown or stringy patches tastes rancid and bitter. The blend must also be long — three or four minutes in a food processor, scraping down repeatedly — until no flecks of avocado remain.

Finally, seasoning. A pinch of salt, vanilla and a little espresso powder sharpen the chocolate and make the avocado disappear further into the background. Sweetness should be adjusted at the end, as cocoa's bitterness and the ripeness of the fruit both vary.

iii. Ingredients

Makes 4 servings · scroll the side panel to adjust

• 2 large ripe avocados (about 300 g flesh)
• 100 g dark chocolate (60–70%), dairy-free if needed, melted and cooled
• 30 g cocoa powder
• 80 ml maple syrup
• 60 ml almond, oat or whole milk
• 1 tsp vanilla extract
• ½ tsp instant espresso powder, optional
• ¼ tsp fine salt
• 100 g raspberries, to serve
• 2 tbsp chopped pistachios or cacao nibs, to serve

Use Hass avocados, which have the creamiest, richest flesh; larger, watery green-skinned varieties give a looser mousse. A dark chocolate of 60–70 per cent gives the best balance; check that it is dairy-free for a vegan mousse. Maple syrup sweetens without graininess; honey, date syrup or agave all work, or blend in 4 soft Medjool dates. The milk loosens the mixture so it blends smoothly; add more for a softer, pudding-like result. Raspberries, whose acidity cuts the richness, are the classic garnish.

iv. Method

1. Melt the chocolate in a heatproof bowl over barely simmering water, or in short bursts in the microwave, and leave to cool for 5 minutes until just warm.
2. Halve the avocados, remove the stones and scoop the flesh into a food processor or high-speed blender, discarding any brown or stringy parts.
3. Add the cocoa, maple syrup, milk, vanilla, espresso powder and salt. Blend for 1 minute, then scrape down the sides.
4. Add the melted chocolate and blend for another 2–3 minutes, scraping down every 30 seconds, until completely smooth and glossy with no green flecks.
5. Taste and adjust: add a little more maple syrup for sweetness, a pinch more salt to sharpen it, or a splash of milk if it is too thick.
6. Spoon into 4 small glasses or ramekins, cover the surface with cling film and chill for at least 1 hour, until set.
7. Serve topped with raspberries and chopped pistachios or cacao nibs.

v. Tips & common mistakes

• Use perfectly ripe avocados. They should yield to gentle pressure. Under-ripe fruit tastes grassy and stays grainy; over-ripe fruit tastes bitter.
• Blend for longer than you think. Three or four minutes, scraping down often, is what turns it silky. Short blending leaves tiny lumps.
• Add melted chocolate, not just cocoa. Cocoa butter sets the mousse in the fridge and gives it body; cocoa alone gives a softer, purée-like texture.
• Cool the chocolate slightly. Very hot chocolate can split the avocado's emulsion and make it oily.
• Season it. Salt, vanilla and a little espresso powder make it taste of chocolate rather than avocado.
• Cover the surface. Cling film pressed onto the mousse stops it browning and forming a skin.

vi. Variations

Mexican chocolate avocado mousse adds ½ tsp cinnamon and a pinch of chilli, in the manner of Mexican chocolate cake. Mocha mousse doubles the espresso. Peanut butter or orange versions blend in 2 tbsp peanut butter or the zest of an orange. A chocolate avocado tart pours the mousse into a baked or no-bake crust and chills it until set. Without chocolate, Brazil's creme de abacate blends avocado with sugar and lime for a pale green dessert.

For classic mousses on DessertCat, see the white chocolate mousse, orange mousse and hazelnut mousse. For another lower-sugar chocolate bake, try the sugar-free chocolate cake.

vii. Serving & storage

Serve chilled in small portions — it is rich — with fresh berries, a dollop of coconut yoghurt or whipped cream, and something crunchy such as nuts, cacao nibs or a crisp biscuit. It also makes a quick filling for tarts or a frosting for cupcakes.

Keep the mousse covered in the fridge, with cling film pressed onto its surface, for up to 2 days; after that the avocado begins to discolour and its flavour becomes noticeable. It can be frozen for up to a month and eaten semi-frozen, like ice cream, or thawed overnight in the fridge and stirred well. It is naturally gluten-free, and vegan when made with dairy-free chocolate, plant milk and maple syrup.

ix. More from North American

• Sugar-Free Chocolate Cake — moist, no-sugar chocolate cake
• Mexican Chocolate Cake — cinnamon-spiced chocolate
• White Chocolate Mousse — airy white chocolate cream
• Hazelnut Mousse — praline mousse
• Orange Mousse — light citrus mousse
• Fruit Parfait — yoghurt, berries and granola