01 - Place avocados, melted dark chocolate, cocoa powder, maple syrup, vanilla extract, sea salt, and coconut milk in a food processor or blender.
02 - Blend until completely smooth and creamy, scraping down sides as needed to ensure even consistency.
03 - Taste and adjust sweetness level by adding more maple syrup if desired.
04 - Divide mousse evenly among four serving glasses or bowls.
05 - Refrigerate for at least 1 hour to allow mousse to set and flavors to meld together.
06 - Top each mousse with fresh berries, chopped nuts, and mint leaf if desired before serving.