ちびちび
chibichibi

To-Adverb

1. little by little; bit by bit; sparingly

Onomatopoeia
たまにはビール以外 いがいのお さけをちびちび めるのも いでしょう。
tamaniwa biiruigaino osakeo chibichibi nameru nomo yoideshō.
It's nice to sip and savour drinks other than beer as well from time to time.
Other forms: