He smacked his lips, savoring the taste of the good tea.
Tips
usage
咂 often appears as 咂嘴 (to smack one's lips) or 咂摸 (to taste / to ponder). The sound itself is onomatopoeic - the smacking or clicking sound of lips tasting something.
Left mouth radical - the indexing radical, drawing the lips that smack. 咂 names the audible 'tsk' or 'smack' a mouth makes when tasting wine, savoring food, or expressing surprise. Sits in the mouth-sound family with 啧 (cluck), 咋 (huh), 嗒 (clatter).
Right side 匝 supplies the sound directly (zā → zā, exact match). The 'one full round' meaning fits faintly - a savouring smack of the tongue makes a full circuit around the mouth before swallowing. Pure phonetic role otherwise; same shape appears in the rare 砸 (smash) where it does similar duty.
