Black Forest Custard For Oreo Lovers

Ingredients: Milk   1 & 1/2 Liter Vanilla Custard Powder   6 Tbsp Sugar    1/2 Cup Brown sugar      1/2 Cup Salt   1/2 Tsp Green Cardamom   2 Cream    1 Cup Oreo Biscuit    60 nos For Topping: Chocolate Ganache  4 Tbsp Cream                          2 Tbsp Fruit Jelly Beans Multi colours pearl