Sift together the first 2 ingredients so they are well combined. Add the golden syrup and almond flavouring and stir well. Add water as instructed. Refrigerate, preferably overnight, to allow the ingredients to properly combine.
Marzipan is something I always disliked as a kid. To be fair, most of the commercial marzipan I ate was not very good. Making it yourself doesn’t take long. isn’t complicated, is dirt cheap, and it tastes fantastic. What are you waiting for?
Side note: don’t worry about getting exactly 103 grams or 149 grams. A gram or two either side won’t make must difference.