Instead of having to test different recipes, is it possible to analyze the ingredient ratios to determine the best recipe ? Using Sachertorte recipes on the internet, I see most recipes divide the sugar (approx 200 g) between granular and confectioner, but I see some recipes that are using only granular. Also, I see some recipes that use 6 eggs and some use 8 eggs. I see most use about a cup of flour but some use 1/2 cup of flour. Regarding a donut recipe, for a certain amount of flour, I see many recipes use 1 stick of butter and 1 or 2 eggs, but one recipe (I'm currently in the process of trying it out) from the authors of Maximum flavor, for the same amount of flour, are using 4 sticks of butter and 4 eggs.