How do I feast somebody?

As an example, to do a Feasted Farmer Push, where Green is Farmer Guild Master, you turn in a sulphur from your wine barrel then you must either: 1: Have a pawn in the same location as a Green Farmer pawn and perform a Feast; or 2: Have a pawn in a Green-ruled Farmer feudum and perform a Feast. When performing a successful Feasted Pull, you score 3+3 VPs and would draw a writ card as per normal. No Reeves are scored during feasts (neither own nor opponent's). A landscape tile in your supply can be exchanged into a wine sulfur immediately before the Feast.