unquestionably good or genuine : excellent —often used as a general expression of approval
Nail him with this - typically, someone says it to conclude a set of simple instructions with "And Bob's yer uncle" - an example would be "okay, so yer digs yer hole, pop in the post, add some 'crete and bob's yer uncle.
I don't know if he was in Australia long enough to pick up the “Bob's yer uncle” thingy. But I will try.
How would this do...... “get yer bowl, the gumbo's on the stove, Bob's yer uncle”. :)