Pour 450 ml of boiling water over the jelly, add the sweetener, mix and pour it into a mold and let it cool. Pour 150 ml of water over the oats and mix them with a sweetener. Let everything cool down. When the flakes have absorbed the water, add the yogurt and mix it. If you want a more compact consistency, it is worth adding a gram of xanthene gum or gelatin / agar. Pour the oatmeal with yoghurt over the jelly, lay out the sliced banana. Mix cocoa with 25ml of water and pour it on top. Put everything in the fridge for at least an hour. Before serving, sprinkle with dried haskap berries for extra crunchiness!