Bloom the gelatin/agar-agar in 3 tbsp water for 5 mins.
Puree mango and sweetener until perfectly smooth.
Heat coconut milk in a pan; whisk in bloomed thickener until dissolved.
Remove from heat and whisk in mango puree and vanilla.
Pour into glasses and refrigerate for 4 hours until set.
Garnish and serve chilled.
Notes
Strain the mango puree if it's stringy.Do not boil the coconut milk aggressively.Use Ataulfo mangoes for the best "honey" flavor.For a firmer pudding, increase thickener by 1/2 teaspoon.