Taster (noun)

1. A person who tastes food or drink in order to evaluate its quality.
2. A small spoon or fork used for sampling food or drink.

Origin:

From old french tasteur, from taster "to taste".

Examples:

1. He is a professional wine taster.
2. The taster spoon is used to sample soup or sauce.
3. The taster evaluated the wine for its aroma and taste.
4. She is a taster for a chocolate factory.
5. The taster is used to check the temperature of a baby's food.