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

1.
usta, becerikli, işinin ehli
a person who is very skilled at a particular activity or craft
:
•
My grandmother is a real dab hand at baking cakes.
Büyükannem kek yapmada tam bir usta.
•
He's a dab hand with a paintbrush.
Fırça kullanmada tam bir usta.