Thank you for the explanation, very helpful.
I no longer make recipes I am given or see that are from the US for instance, as they never seem to work for me (after several tries of each new one). I am sure it is because the substitutions on my part are not correct.
You don't need to use custard powder, cornstarch will have the same effect only the biscuit will be whiter instead of a pale yellow.You don't brown the biscuits, if you do then they are over done. Your snowball type biscuits sound very interesting.
Thanks again,
Conversion -
Just had a look at my conversion chart and 250gm butter
= 2 1/5 stick (2.20) of butter or 8.82oz
Maybe1day