This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development is uncertain. The modern form visually contains 竹 (bamboo) above 皿 (dish), but the original meaning and component relationship are unclear.
The top is bamboo and the bottom is a dish. Picture a bamboo basket or tray, but the actual meaning is uncertain.
For ミン, imagine a bamboo dish used for serving mints: mint -> ミン, and the bamboo dish holds them.