I top it with bailey's because bailey's or kalua is creamy..

Milk is the base of custard.. I can add bailey's to the custard when it's just thickening. but cooking alcohol kills the alcohol content.

Why not make a custard fool? This is where you turn creative with drinks. ...

Soak the cake in rum. That's the bottom layer. Soak the fruits in White Russian. Next layer. Make the jelly with part water..part vodka.. Pour your custard. Douze with bailey's.  Decorate with cream whipped with whiskey.

I'm not responsible for what you bryce after that.. :-p  I do know one spoon of that and I'll be sloshed!