Custard typically contains lactose because it is made with milk or cream, both of which contain this sugar. The lactose content can vary depending on the type of milk used and the recipe, but on average, a serving of custard can have around 5 to 10 grams of lactose. For those who are lactose intolerant, lactose-free milk can be used as a substitute to reduce or eliminate lactose content.
Frozen Custard contains a mix of cream and egg white instead of just cream, so the amount of lactose will vary, but is generally less then regular ice cream. Some people with lactose intolerance find it is a good alternative, but not everyone.
One must simply avoid anything with lactose in it. This would mean that one must cut out most, if not all dairy products such as milk, yogurt, cream, custard, etcetera.
Yes, I would very much like a custard tart.
the amount in one package(envelope)of custard mix
None. Lactose comes from milk.
No. Custard usually contains some protein. How much and what type of protein will depend on the ingredients.
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Jews are not a monolith and have independent thoughts and tastes so no, not all Jews hate custard. Many Jews enjoy custard very much!
tolerates
Theoretically yes, in practice.... don't bother. You can get Provamel custard which is much more reliable!
To prevent skin from forming on custard, you can cover the surface with plastic wrap, ensuring it touches the custard to minimize air exposure. Stirring the custard frequently during cooking can also help, as it keeps the surface from cooling too much. Another method is to cool the custard quickly by placing the bowl in an ice bath after cooking.
I am from New Zealand, and I think that not that much New Zealnders are lactose and tolerant....