Not even remotely in my opinion. Lost me at the second ingredient, CAP french vanilla, and again at orange (orange in CLS? Made me giggle)Does this recipe look to be a likely sub. for CLS?
Nicoticket Custard's Last Stand - Le DIY pour les Nuls
CLS I think is largely what it is because of Clarks inhouse vanilla extract. It definitely DOES use CAP vanilla custard V1, though, without a doubt. So does ACB.