A kettle line is a drink name in English, the sweetness words that may sit beside it, and a stop on calorie counts and health claims.
A kettle line does not sell a drink. The English name may be milk tea, lemon tea, or yuenyeung, and it is only a name. Sweetness words are limited to none, half, and full. They sit beside the name. They are not a formula. Calorie counts, cures, pick-me-ups, and energy claims stay off the page. 16th Street does not treat a kettle line as a menu.