Definition of Metric System
The metric system is a measurement system based on units such as grams, milliliters, and liters. In cooking, it is widely used because it is decimal, consistent, and easy to scale.
Metric recipes often list solids by grams and liquids by milliliters. That makes the instructions straightforward to calculate, especially when doubling or reducing a recipe.
Because the metric system uses related units, conversions within the system are usually simpler than moving between cups, ounces, tablespoons, and pints.