Baking delicate French macarons is a scenario where measuring ingredients by volume can easily lead to failure due to inconsistencies in ingredient packing, while measuring by weight provides the precision needed for success.
Macarons are notoriously finicky cookies that require a precise ratio of ingredients to achieve their signature smooth shells, delicate feet, and chewy interior. Measuring ingredients like almond flour and powdered sugar by volume can introduce significant variations. For example, the way almond flour is scooped into a measuring cup can greatly affect the amount you end up with. Almond flour can be more or less compacted depending on how it's handled. Similarly, powdered sugar can clump, leading to inaccurate measurements. These variations, even if seemingly small, can throw off the entire recipe, resulting in cracked shells, hollow interiors, or no feet at all.
Measuring by weight, on the other hand, eliminates these inconsistencies. A kitchen scale provides a precise and repeatable measurement, ensuring that you consistently use the correct amount of each ingredient. This precision is crucial for achieving the proper balance of wet and dry ingredients, which is essential for the macaron's delicate structure. By weighing your ingredients, you remove the guesswork and increase your chances of success with this challenging bake.
Always use a digital kitchen scale for the most accurate measurements when baking macarons. Even a slight difference in weight can impact the final result. Tare the scale between each ingredient to ensure you're only measuring the weight of the ingredient you're adding.