I am a beginner to making entremets (mousse cakes) and I have found a recipe that calls for gelatin sheets. However, it does not give the gelatin bloom strength or the number of grams. In the list of ingredients for the mousse it says that "2 gelatin sheets" are needed, and in the ingredient list for the mirror glaze, it calls for "5 gelatin sheets". Does anyone know what bloom strength I should use? Is there a standard to go by when the strength is not given? Thank you.