All types of dried fruit can be modified if you wish. Instead of apricots, raisins, almonds and pistachios, you can use walnuts, hazelnuts, prunes, bananas, etc.
Similarly, the coulis can be made with strawberries, blackberries, blackcurrants, etc. I’d still recommend something a little tangy to contrast with the very sweet nougat.
Two methods are possible for the meringue:
You can choose one or the other. My preference is for the Italian meringue, which is trickier to make, but much creamier.
