What is the definition of OZ when baking?

In baking, "oz" stands for ounce, which is a unit of weight in the avoirdupois system. It is commonly used to measure small quantities of ingredients, such as spices, baking powder, baking soda, or small amounts of butter. One ounce is equivalent to 28.35 grams.

When following a baking recipe, it is essential to measure ingredients accurately to ensure the desired results. Some recipes may provide measurements in ounces, so having a kitchen scale that can measure in ounces or a conversion chart handy can be useful for precise baking.