1 kgthick plain yoghurt200 gmdouble cream120 gmraw caster sugar100 mlcoconut liqueur, to serve200 mlpassionfruit pulpLime and mint jelly660 gm (3 cups)caster sugar220 mllime juice, strained1½ cups (firmly packed)mint5gelatine leaves (titanium strength), softened in cold water for 5 minutesCoconut cake220 gmplain flour220 gmraw caster sugar70 gmfinely grated fresh coconutFinelygrated rind of 3 limes1½ tspbaking powder200 mlcoconut milk125 gmbutter, melted and cooled2eggs70 mllime juice
Spoon yoghurt into a fine sieve placed over a deep bowl and refrigerate overnight to drain (discard liquid).
For lime and mint jelly, combine sugar and 450ml water in a saucepan and stir over medium-high heat until sugar dissolves. Bring to the boil, remove from heat and cool, then stir in lime juice. Meanwhile, blanch mint until just wilted (10 seconds), refresh, then squeeze out any excess liquid. Transfer to a food processor, add 160ml lime syrup and process until puréed. Stir through remaining lime syrup then strain through a muslin-lined sieve (discard solids). Heat 250ml lime-mint syrup in a small saucepan over medium-high heat. Squeeze excess water from gelatine, add to pan and stir to dissolve. Stir into remaining lime-mint syrup, transfer to a 1.5-litre container and refrigerate until set (3-4 hours).
Meanwhile, for coconut cake, preheat oven to 180C. Combine flour, sugar, coconut, lime rind and baking powder in a bowl and mix to combine. Add coconut milk, butter and eggs, stir to combine, then stir in lime juice. Spread into a 20cm x 30cm lamington pan lined with baking paper and bake until cake is light golden and centre springs back when lightly pressed (40-45 minutes). Cool completely and store wrapped in plastic wrap until required.
Transfer yoghurt to a bowl, add cream and sugar and whisk to combine.
Spoon lime and mint jelly into ten 250ml glasses, coarsely crumble over coconut cake and drizzle with a little coconut liqueur. Spoon over yoghurt mixture, then passionfruit pulp, then repeat, finishing with passionfruit pulp. Refrigerate until required.