What type of aromas indicate a compromised sake bottle?

The presence of caramel and toffee aromas in sake typically suggests that the sake may be compromised. These aromas can indicate excessive oxidation or issues related to storage conditions, such as exposure to light or heat, which can lead to unwanted chemical reactions in the sake.

In contrast, fresh floral notes, sweet citrus, and apple aromas are often associated with well-made, high-quality sake. Light herbal scents can also suggest freshness and a desirable character in sake. Thus, when signs of caramel and toffee are detected, it raises concerns about the integrity of the sake, signaling that the bottle may not be in optimal condition for consumption.