Yogurt Mοusse in biscuit base with carob syrup, linseed, mandarin marmalade and peanuts

For the biscuit base: In the mixer bin, I drop the butter and the sugar and I hit until the butter is soaked for about 7 minutes. I add the flour, bran, grated peanuts, and linseed, and the one egg, I keep hitting at low speed for 1 minute. I divide my dough into large pieces in a baking dish with non-stick paper and I bake at 160 degrees for 22 to 27 minutes. Then I let it cool and I break it and mix it with the carob syrup. I put the biscuit mixture in a form and I press the mixture to the same thickness. For the yoghurt mousse: I melt in bain marie the white chocolate. Gently I mix the yoghurt until it gets a smooth shape, I pour the white chocolate into the yoghurt and I stir in rapid motion, and lastly I add the whipped cream with gentle motions to homogenize the mixture. I leave the mousse in the fridge for 1 hour to take its form. At the end I put it in the form with the biscuit and I leave it in the fridge for 3 to 4 hours to freeze. For mandarin marmalade: After