To commemorate the fact I’m still alive after several days of the most physically demanding work I’ve done in several years, here’s the Killer Custard recipe I’m currently vaping.
I won’t even call it a clone, because it’s too accurate to be called that:
Killer Custard
Several of these flavours can be subbed because even without knowing what the others taste like, I know these specific flavours add-up to Killer Custard and that these same flavours in different brands are used on so many clones it’s why I subconsciously know they’re major ingredients in KC clones.
The custard will still need to steep, but the other ingredients don’t take nearly as long and even fresh you’ll still get the French Vanilla loud and clear for a few days until the cheesecake catches-up, then a few days after that the custard itself will begin to emerge, so the mix will ‘fill-out’ a bit more every few days as each individual flavour starts showing itself.
Mix that, and killer custard will be your standard custard starting base to mix with 
7% Custard
The biggest portion of this which can be subbed with Capella’s Custard v1 or v2…
5% Vanilla Cream
Other creams could probably be used instead of actual vanilla-flavoured cream: like Sweet Cream or Fresh Cream, though vanilla would be needed to replace what’s not in the cream…
5% French Vanilla
4% Cheesecake
Any good cheesecake, of course mine is VTA, but there’s plenty of recipes using different brands of very good cheesecake and any of those will do…
2% Butter
Plus a tiny bit of Butter Base or another good butter though I’d be more careful about this: you’re better off with no butter at all than a gross tasting one that ruins the mix entirely, so check whatever butter you have tastes good and not like shit before including it.
Notes
23% combined flavours + 7% 100mg/mL nic base = 30% PG - the other 70% glycerine, which’ll give you 70/30, 7mg killer custard.
Course I realize there’s many, maaaany recipes with these general ingredients plus various others, but I can genuinely state I didn’t use any recipe because - as stated in the first few paragraphs - I know these ingredients through glancing and countless KC clones and subconsciously hanging-onto the ‘average’ of those things my eyeballs saw repeatedly.
