The key words in this flat (AT A GLANCE) represent either of two, two-word phrases. The phrases are anagrams of each other.

 

I phoned up my butcher (named

   Lance)

And ordered, two weeks in advance,

Some pounds of pastrami

And mounds of salami - 

That should be enough  AT A GLANCE.

HINT: 

That should be enough _ _ _ _    _ _ _ _.

The initial letters of the two words are D and M in one phrase and L and T in the other.

Answer:

 

DELI MEAT

LEAD TIME

 

Credit:
The Enigma

August, 2020

AROUND EVE