How full do we typically fill our small latte tins?

The typical guideline for filling small latte tins to a half-full capacity is based on ensuring there is enough room for the milk to expand when steaming. When milk is steamed, it significantly increases in volume due to the introduction of air and heat. Filling the tins to just half full allows for this expansion without risking spills or overflow, which can create a messy situation and lead to inconsistency in the final drink.

Additionally, maintaining this half-full standard helps in achieving the right balance between coffee and milk, contributing to a well-structured latte that has the desired creaminess and texture. This practice is consistent across many coffee shops focusing on quality and efficiency in drink preparation.