Mama wa Bartender: Koyoi mo Odorou

Hoshino Akari is a single mother who, after losing her husband, struggles to maintain the balance between her dual role of raising her two children while carrying out her duties as a bartender. In her job serving cocktails to troubled customers at BAR 1511, she listens empathetically and solves their troubles with her kind words of advice.
(Source: Drama-Otaku)