Mama Linda stated: "As highlighted in Netflix's Live to 100, Japanese purple sweet potatoes are a powerful longevity food and a key part of the Okinawan diet. "Their purple colour comes from ...

from ice cream to Japanese cheesecake. Ube is not to be confused with sweet potatoes or other types of yams, which are typically yellow or white in appearance, the bright purple hue makes ube a ...

The vegetable made up more than half of the daily diet eaten by those on a Japanese island where living to 100 is often the norm.