If you don't intend to serve the apricot meringue and pistachio jars immediately, keep them in the fridge until ready to serve, taking care to close each jar to prevent their flavour from being contaminated by other foods in the fridge. Leftovers keep well in the fridge for 3 days.
Brown sugar icing can be prepared easily at home by blending raw brown sugar.
You can substitute apricots with your favorite fresh fruit such as peaches, strawberries, cherries, wildberries or a fresh fruit mix you like.