Strawberry Sauce or Jelly:
You can make jelly kind of thick sauce rather than set completely or jelly as it is choice is yours.
Jelly:
Take a pot put water add sugar, agar agar powder and citric acid mix well and keep on boil, when it boils remove from flame add fruit essence and fruit. Let it cool a bit, before pouring on pudding
NB: can use ready jelly and add chopped strawberries