Mix the gelatin into the water and set aside.

Melt the chocolate and oil till done. Cool slightly.

Beat the egg yolks lightly. Pour in the chocolate mixture and keep beating till well incorporated.

Meanwhile, beat the egg whites till stiff. Add in the sugar and beat till glossy.

Microwave the gelatin water for 30 seconds. Fold in the egg white and gelatin into the beaten chocolate mixture. Fold in the blueberries.

Pour into a mould and allow to set in the fridge overnight.

Keep out for a few minutes before unmoulding and serving!