Not the kind that goes on trifle. Lord, I get a headache just taking out the double boiler. Buy Bird’s, I can’t make it any better than that. I’m talking about baked custard. Bread pudding is custard, Rice pudding is custard. The proteins in eggs stiffen up when heated. Even soufflé is custard, the whites and yolks are beaten separately to incorporate air, but the principle remains the same. I use a proportion of 1 part egg to 3 or 4 parts milk, with a few extra yolks added in for good measure. A dozen eggs, add 3 extra yolks.