You have real custard!! I've been looking everywhere for a recipe book with puddings that might work for me and my family which would ideally be no sugar without using fake sugar, ie they don't need to taste sweet. But I don't seem to be able to eat fruit anymore (testing with Libre). I can't have even a teaspoon of cooking apple puree so healthy nutty crumbles are out for example. Did you invent your own recipes?I have found that GI and GL just do not apply - I digest things too well.
The carb count is the key - and making things yourself removing the carbs - I make real custard, no sugar, almond sponge also without sugar.
I have a small notebook in which I list low carb foods and the typical carb content, which seems to be a good resource.
Maybe its possible to exist on protein and veg alone?