Premise: A French sauce spoon or saucier spoon is a spoon that is typically the size and shape of a dessert spoon, but with a flattened bowl that has a thinner edge and a small notch on one side. As the name suggests, a French sauce spoon is used to eat the sauce accompanying a dish. Such a spoon may be referred to simply as a sauce spoon, but this can also refer to a spoon used to serve sauce.
Hypothesis: A French sauce spoon is a spoon that is the size and shape of a dessert spoon, but with a flattened bowl that has a thinner edge and a small notch on one side. It is used accompanying a dish. This spoon may be referred to simply as a sauce spoon or to serve sauce.