dab hand
US /ˌdæb ˈhænd/
UK /ˌdæb ˈhænd/

1.
cekap, mahir, pakar
a person who is very skilled at a particular activity or craft
:
•
My grandmother is a real dab hand at baking cakes.
Nenek saya memang cekap dalam membakar kek.
•
He's a dab hand with a paintbrush.
Dia cekap menggunakan berus cat.