dress (salad) vegetables
韲 centers on preparing vegetables by dressing or seasoning them, especially in a salad-like dish. The meaning is specific to culinary dressing.
韲 combines 韭 (leek or allium vegetables) with a phonetic element derived from 齊, suggesting dressing or mixing vegetables. The exact historical development is uncertain.
The bottom 韭 represents vegetables, and the top 齊 looks like a balanced arrangement. Imagine carefully dressing a pile of vegetables until they are evenly coated.
For セイ, picture saying 'say' as you dress the salad: 'say' -> セイ, as if instructing the vegetables to be perfectly seasoned.
pulverization