• Mango Jello: In a saucepan, combine water and agar-agar. Let sit for 3 minutes. Then, add the mango puree and sugar. Cook over medium heat until the mixture comes to a boil. Strain through a sieve to remove any undissolved agar-agar. Set aside to cool slightly - 2 minutes.
  1 cup Mango puree, 1/4 cup Sugar, 1 1/2 cup Water, 1 tbsp Agar-agar
• Insert: Pour half the jello into a 6-inch silicone cake pan or 6-inch metal cake pan lined with plastic wrap (see video). Refrigerate the pan for 20 minutes. Save the other half for the top - keep warm or warm it up just before using it again.
• Cookie base: Combine cookie crumbs in a bowl with sugar and melted butter. Pour into an 8-inch springform pan or 8-inch dessert ring lined with dessert sleeves (or run a hot knife around the cake later before unmolding). Spread evenly, then use the back of a glass to press it down firmly. Place it in the fridge to chill for 10 minutes.
  8 oz Cookie crumbs, 1 tbsp Sugar, 1/4 cup Butter
• Mango mousse: Place the water, mango puree, and agar-agar in a saucepan. Cook over medium heat until it comes to a boil. Then, cook for 2 minutes to concentrate the mango flavor and evaporate excess moisture. Remove from the heat and strain through a sieve. Let cool for a few minutes until cool but not set (2 to 3 mins). In the meantime, whip the whipping cream with powdered sugar until it peaks. Add the cooled mango puree mixture and gently fold it until well combined.
  1 1/2 cup Mango Puree, 1 1/2 cup Whipping cream, 2 tbsp Agar-agar, 2 tbsp Powdered sugar, ¼ cup Water

Assemble

• Remove the chilled cookie crust from the fridge. Pour half the mousse in and spread it evenly. Then, place the chilled set of jello inserts from the 6-inch pan.
• Top with the remaining mousse - use a spoon and offset spatula to smooth it evenly. Then, pour the remaining jello. (the half we saved previously)

  Pro tip - I like to pour over a spoon so it doesn't disturb the mousse (see video)
• Carefully place the pan in the fridge for at least 4 hours to chill, preferably overnight. Garnish with some fresh mango slices.