01 - Position a heatproof bowl over a saucepan containing gently simmering water, creating a double boiler. Add the chopped dark chocolate to the bowl and stir continuously until completely melted. Remove from heat and allow to cool to a lukewarm temperature.
02 - In a food processor or high-speed blender, combine the peeled and pitted avocados, slightly cooled melted chocolate, pure maple syrup, vanilla extract, fine sea salt, unsweetened cocoa powder, and almond milk. Process until the mixture achieves a perfectly silky-smooth consistency, pausing as necessary to scrape down the sides of the bowl.
03 - Taste the prepared mousse. Adjust for desired sweetness by incorporating additional maple syrup, or enhance chocolate intensity with more cocoa powder, blending briefly after each addition.
04 - Portion the mousse into individual serving glasses or ramekins. Cover each portion and refrigerate for a minimum of 1 hour, or until thoroughly chilled and firm.
05 - Just prior to serving, sprinkle each portion with flaky sea salt. Optionally, garnish with fresh berries or cocoa nibs for an enhanced presentation.