Technique: Half-rim only — NEVER full. Wet half the rim with lemon (run the lemon over the rim's outer edge). Roll in caster sugar + fine lemon zest mix. The other half of the rim stays clean.
Used in:
Prep: 50 g sugar + fine lemon zest mix in a shallow ramekin. Refresh mid-shift.
Visual cue: Clean line where sugar meets bare glass. No interior sugar — only the outer rim. Guest chooses which side to drink from.