In a small London Fog, how many pumps of vanilla are required?

In the preparation of a small London Fog, the standard amount of vanilla syrup used is typically three pumps. This quantity is considered to provide a balanced flavor that complements the earl grey tea and steamed milk without overpowering the other ingredients. The use of three pumps allows for a pleasant sweetness and aromatic quality that enhances the overall drink experience.

In contrast, opting for two pumps may result in a less pronounced vanilla flavor, while four or five pumps could lead to an overly sweet drink that may detract from the intended flavor profile of the London Fog. Therefore, three pumps is the optimal choice to achieve the desired taste balance in this beverage.