The perennial question on everyone’s lips: How to get and keep clients? We’ve heard from plenty of business development experts over the years, but not nearly enough from partners at major firms.

Luckily, Michael McDonald, a partner at Cleary, Gottlieb, Steen & Hamilton‘s London office, is filling that gap. RollOnFriday got its claws on McDonald’s memo, "How to Superplease Clients," which was sent out to the firm’s trainees and associates. The memo lists what they can do to keep external and "internal" clients (e.g., partners) happy. (We asked Cleary for comment, but have not heard back.)