1.
To start with lets make sauce: mix orange juice, liqueur (you can take any alcohol, which seems logical), strawberries (slightly cut them to simplify the work) in a blender and bring these all to a liquid pure condition. Why do we use an orange juice there? To shade the taste of strawberries and to have a not too sugary dessert on the way out. Tiramisu is well known for its contrasts (bitter coffee, sweet cream).