Every action has an equal and opposite reaction.

Let's review a chef shuffling that is playing out at the moment:

Aaron Gottesman was opening chef at Border Springs Farm - the lamb specialist at Reading Terminal Market - until he left for Kevin Sbraga's universe. He will be chef de cuisine at The Fat Ham, which opens in University City next month.

This void created an opening at Border Springs Farm - which will be filled by Nick Macri of Southwark in Queen Village. He starts in the middle of next month at Reading Terminal, where he will take advantage of those daytime hours and a heavy load of butchering, something he enjoys.

Macri's depature created an opening in the kitchen at Southwark, and the new chef there will be Sam Jacobson.

Jacobson left his previous post at Sycamore in Lansdowne, where he picked up all kinds of praise, nearly a year ago.

He's expected to maintain his ties to local suppliers, a key ingredient in the nine-year-old restaurant.