The final line of dialog in Beginner Lesson 27 reads as 刺身でいいですね. My question is what is meaning of で in this context? Is this a set phrase that only works with いい or is it a case of a more general grammatical pattern such as [noun]で[adjective]です? This page seems single out this combination of で and いい as a special case worth mentioning.
Thanks in advance for any light you are able shed on the matter.
-Matt