I've made loads of 5ml variations of custard over the last few months, whilst searching for the one I love best - including simple mixes of around 18% Cap custard 1% EM and then varying %'s of different creams in each tester to see what difference they make. The Vienna Cream sample - this was sort of bright tasting and I enjoyed it. Catalan Cream sample - ok but better when I mixed it with the Butterscotch. Bavarian Cream sample - like others have said, this is a perfect custard mixing parter. Fresh Cream sample - nice creamy custard but needs some oomph from other flavours added.
Brown Sugar extra (TPA) goes well with custardy things, I added some to my Catalan Custard to experiment
Still haven't mixed my perfect custard but am making progress towards it!!