Which of the following is true about measuring drinks?

Accurate measurements ensure consistency and quality is a fundamental principle in bartending. When bartenders measure each ingredient precisely, it helps achieve the same taste and balance in the drink every time it is made. This reliability builds trust with customers, as they grow to expect a certain flavor profile and experience each time they order a drink. Additionally, in many establishments, the measurement of drinks is crucial for inventory control and cost management. It prevents over-pouring, which can significantly affect a bar's profitability and operational efficiency.

The other choices suggest practices that may undermine the quality of service and product. Relying on estimations and eye-balling ingredients can lead to variations in flavor and strength, which may result in an unsatisfactory experience for customers. Moreover, the idea that only high-end bars measure drinks is misleading; it is a best practice used across all types of establishments to maintain standards. While some experienced bartenders may feel confident in their ability to estimate pour sizes, consistently measuring ingredients is a hallmark of professional bartending that benefits all types of bars.