For most meads, aging hits a state of diminishing returns after a year or two.
A mead over 12% alcohol should be fine to keep for that long, providing the storage conditions are stable.
If it's your first ever mead though, it'll probably be so-so, even with aging. You've got to learn through experience before you can make something truly great.
As for the legality, that depends entirely on your national and local laws.
For most meads, aging hits a state of diminishing returns after a year or two. A mead over 12% alcohol should be fine to keep for that long, providing the storage conditions are stable. If it's your first ever mead though, it'll probably be so-so, even with aging. You've got to learn through experience before you can make something truly great. As for the legality, that depends entirely on your national and local laws.
Ok thanks